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The number of reported erectile dysfunction treatment cases across the globe has surpassed 25 million, with the U.S., Brazil check it out and prices of levitra India leading the grim count, according to data from Johns Hopkins University. The erectile dysfunction has killed more than 843,000 people worldwide since it emerged from Wuhan, China, late last year, with the Americas reporting the bulk of fatalities. The U.S., Mexico and Brazil represent more than 40% of the global death toll, according prices of levitra to Johns Hopkins. Reported erectile dysfunction treatment cases first surpassed 10 million in late June, then reached 20 million just over six weeks later on Aug. 10, according to Johns prices of levitra Hopkins data.

"This levitra is going to be with us for a while. Without a treatment, it's going to be with us for years," Carissa Etienne, director of Pan American Health Organization and the World Health Organization's regional director for prices of levitra the Americas, said during a news briefing Tuesday. "Reopening does not mean that the fight is over."Some European countries have started to report a recent resurgence in cases. France Prime Minister Jean Castex said the levitra has spread rapidly among young people, forcing the prices of levitra government to intervene. Castex said France "must do everything to avoid a new confinement," the Associated Press reported on Thursday.

s in Spain, which has the highest case count among European countries, have prices of levitra climbed to nearly 440,000 cases since the country lifted its lockdown in late June, according to Hopkins. The U.S. Continues to struggle with the world's worst outbreak and largest prices of levitra reported case count, though the growth in new cases appears to be leveling off after a summer of surging outbreaks.The U.S. Reported an average of 42,000 new s a day over the last week, a decline of more than 3.0% compared with the prior week, according to a CNBC analysis of Hopkins' data. New cases in the prices of levitra U.S.

Peaked at 67,317 daily cases on July 22, based on a seven-day average, after a resurgence of erectile dysfunction cases ripped through the Sun Belt states in June and July."The current plan — wearing a mask, watching your distance, washing your hands, supplemented by smart testing, according to the state plans, surge testing and extreme technical assistance by CDC as well as our craft teams — continues to yield results," Assistant Secretary for Health Adm. Brett Giroir told reporters on a conference call last week.However, health officials are concerned that the erectile dysfunction may spread to America's heartland. As of Sunday, cases were growing by 19% or more in Indiana, Iowa, Kansas, Nebraska, Michigan, Minnesota, prices of levitra North Dakota and South Dakota, according to a CNBC analysis of Hopkins' data. Centers for Disease Control and Prevention Director Robert Redfield recently told Dr. Howard Bauchner of the Journal of the American Medical Association that there are worrying signs in the middle of prices of levitra the country where cases appear to be plateauing but not falling.

Redfield said the area "is getting stuck," which is a concern as seasonal influenza threatens to overwhelm hospitals and cause preventable deaths. "We don't prices of levitra need to have a third wave in the heartland right now," he said. "We need to prevent that particularly as we're coming to the fall."The U.S. Is gearing up to distribute a treatment, prices of levitra which is expected sometime early next year, as part of the Trump administration's Operation Warp Speed. Health officials have said there's no returning to "normal" until a treatment is distributed.

On Wednesday, the CDC proposed prices of levitra guidelines for who would receive the first doses once a treatment candidate is approve, prioritizing health-care workers, essential personnel and vulnerable Americans, such as the elderly and those with underlying health conditions. White House erectile dysfunction advisor Dr. Anthony Fauci has said the initial supply of treatment doses is expected to be limited and won't be widely available to Americans until "several months" prices of levitra into 2021. The federal government has spent billions in treatment development, locking in a minimum of 800 million doses as soon as the immunizations are cleared later this year or early next year. Russia registered a treatment, called "Sputnik V," on prices of levitra Aug.

11, though scientists warn that its candidate has only gone through phase one and phase two clinical trials and not large human trials to prove the treatment's efficacy. Russia said prices of levitra it would begin phase three trials in August. €” CNBC's Will Feuer, Berkeley Lovelace Jr. And Holly Ellyatt contributed to this report..

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How to cite this article:Singh adam levitre O P http://cz.keimfarben.de/cheapest-place-to-buy-levitra/. Aftermath of celebrity suicide – Media coverage and role of psychiatrists. Indian J Psychiatry 2020;62:337-8Celebrity suicide is one of the highly publicized events in adam levitre our country. Indians got a glimpse of this following an unfortunate incident where a popular Hindi film actor died of suicide. As expected, the media went into a frenzy as newspapers, news channels, and social adam levitre media were full of stories providing minute details of the suicidal act.

Some even going as far as highlighting the color of the cloth used in the suicide as well as showing the lifeless body of the actor. All kinds of personal details were dug up, and speculations and hypotheses became the order of the day in the next few days that followed. In the process, reputations of many people associated with the actor were besmirched and their private adam levitre and personal details were freely and blatantly broadcast and discussed on electronic, print, and social media. We understand that media houses have their own need and duty to report and sensationalize news for increasing their visibility (aka TRP), but such reporting has huge impacts on the mental health of the vulnerable population.The impact of this was soon realized when many incidents of copycat suicide were reported from all over the country within a few days of the incident. Psychiatrists suddenly started getting distress calls from adam levitre their patients in despair with increased suicidal ideation.

This has become a major area of concern for the psychiatry community.The Indian Psychiatric Society has been consistently trying to engage with media to promote ethical reporting of suicide. Section 24 (1) of Mental Health Care Act, 2017, forbids publication of photograph of mentally ill adam levitre person without his consent.[1] The Press Council of India has adopted the guidelines of World Health Organization report on Preventing Suicide. A resource for media professionals, which came out with an advisory to be followed by media in reporting cases of suicide. It includes points forbidding them from putting stories in prominent positions and unduly repeating them, explicitly describing the method used, providing details about the site/location, using sensational headlines, or using photographs and video footage of the incident.[2] Unfortunately, the advisory seems to have little effect in the aftermath of celebrity suicides. Channels were adam levitre full of speculations about the person's mental condition and illness and also his relationships and finances.

Many fictional accounts of his symptoms and illness were touted, which is not only against the ethics but is also contrary to MHCA, 2017.[1]It went to the extent that the name of his psychiatrist was mentioned and quotes were attributed to him without taking any account from him. The Indian Psychiatric Society has written to the Press Council of India underlining this concern and asking for measures to ensure ethics in reporting suicide.While there is a need for engagement with media to make them adam levitre aware of the grave impact of negative suicide reporting on the lives of many vulnerable persons, there is even a more urgent need for training of psychiatrists regarding the proper way of interaction with media. This has been amply brought out in the aftermath of this incident. Many psychiatrists and mental health professionals adam levitre were called by media houses to comment on the episode. Many psychiatrists were quoted, or “misquoted,” or “quoted out of context,” commenting on the life of a person whom they had never examined and had no “professional authority” to do so.

There were even stories with byline of a psychiatrist where the content provided was not only unscientific but also way beyond the expertise of a psychiatrist. These types of viewpoints perpetuate stigma, myths, adam levitre and “misleading concepts” about psychiatry and are detrimental to the image of psychiatry in addition to doing harm and injustice to our patients. Hence, the need to formulate a guideline for interaction of psychiatrists with the media is imperative.In the infamous Goldwater episode, 12,356 psychiatrists were asked to cast opinion about the fitness of Barry Goldwater for presidential candidature. Out of 2417 respondents, 1189 psychiatrists reported him to be mentally unfit while none had actually examined him.[3] This led to the formulation of “The Goldwater Rule” by the American Psychiatric Association in 1973,[4] but we have witnessed the same adam levitre phenomenon at the time of presidential candidature of Donald Trump.Psychiatrists should be encouraged to interact with media to provide scientific information about mental illnesses and reduction of stigma, but “statements to the media” can be a double-edged sword, and we should know about the rules of engagements and boundaries of interactions. Methods and principles of interaction with media should form a part of our training curriculum.

Many professional societies adam levitre have guidelines and resource books for interacting with media, and psychiatrists should familiarize themselves with these documents. The Press Council guideline is likely to prompt reporters to seek psychiatrists for their expert opinion. It is useful for them to have a template ready with suicide rates, emphasizing multicausality of suicide, role of mental disorders, as well as help available.[5]It is about time that the Indian Psychiatric Society formulated its own guidelines laying down the broad principles and boundaries governing the interaction of Indian psychiatrists with the media. Till then, it is desirable to be guided by the following broad principles:It should be assumed that no statement goes “off the record” as the media person is adam levitre most likely recording the interview, and we should also record any such conversation from our endIt should be clarified in which capacity comments are being made – professional, personal, or as a representative of an organizationOne should not comment on any person whom he has not examinedPsychiatrists should take any such opportunity to educate the public about mental health issuesThe comments should be justified and limited by the boundaries of scientific knowledge available at the moment. References Correspondence Address:Dr.

O P SinghAA 304, Ashabari Apartments, O/31, Baishnabghata, Patuli Township, Kolkata - 700 094, adam levitre West Bengal IndiaSource of Support. None, Conflict of Interest. NoneDOI. 10.4103/psychiatry.IndianJPsychiatry_816_20Abstract Electroconvulsive therapy (ECT) is an effective modality of treatment for a variety of psychiatric disorders. However, it has always been accused of being a coercive, unethical, and dangerous modality of treatment.

The dangerousness of ECT has been mainly attributed to its claimed ability to cause brain damage. This narrative review aims to provide an update of the evidence with regard to whether the practice of ECT is associated with damage to the brain. An accepted definition of brain damage remains elusive. There are also ethical and technical problems in designing studies that look at this question specifically. Thus, even though there are newer technological tools and innovations, any review attempting to answer this question would have to take recourse to indirect methods.

These include structural, functional, and metabolic neuroimaging. Body fluid biochemical marker studies. And follow-up studies of cognitive impairment and incidence of dementia in people who have received ECT among others. The review of literature and present evidence suggests that ECT has a demonstrable impact on the structure and function of the brain. However, there is a lack of evidence at present to suggest that ECT causes brain damage.Keywords.

Adverse effect, brain damage, electroconvulsive therapyHow to cite this article:Jolly AJ, Singh SM. Does electroconvulsive therapy cause brain damage. An update. Indian J Psychiatry 2020;62:339-53 Introduction Electroconvulsive therapy (ECT) as a modality of treatment for psychiatric disorders has existed at least since 1938.[1] ECT is an effective modality of treatment for various psychiatric disorders. However, from the very beginning, the practice of ECT has also faced resistance from various groups who claim that it is coercive and harmful.[2] While the ethical aspects of the practice of ECT have been dealt with elsewhere, the question of harmfulness or brain damage consequent upon the passage of electric current needs to be examined afresh in light of technological advances and new knowledge.[3]The question whether ECT causes brain damage was reviewed in a holistic fashion by Devanand et al.

In the mid-1990s.[4],[5] The authors had attempted to answer this question by reviewing the effect of ECT on the brain in various areas – cognitive side effects, structural neuroimaging studies, neuropathologic studies of patients who had received ECT, autopsy studies of epileptic patients, and finally animal ECS studies. The authors had concluded that ECT does not produce brain damage.This narrative review aims to update the evidence with regard to whether ECT causes brain damage by reviewing relevant literature from 1994 to the present time. Framing the Question The Oxford Dictionary defines damage as physical harm that impairs the value, usefulness, or normal function of something.[6] Among medical dictionaries, the Peter Collins Dictionary defines damage as harm done to things (noun) or to harm something (verb).[7] Brain damage is defined by the British Medical Association Medical Dictionary as degeneration or death of nerve cells and tracts within the brain that may be localized to a particular area of the brain or diffuse.[8] Going by such a definition, brain damage in the context of ECT should refer to death or degeneration of brain tissue, which results in the impairment of functioning of the brain. The importance of precisely defining brain damage shall become evident subsequently in this review.There are now many more tools available to investigate the structure and function of brain in health and illness. However, there are obvious ethical issues in designing human studies that are designed to answer this specific question.

Therefore, one must necessarily take recourse to indirect evidences available through studies that have been designed to answer other research questions. These studies have employed the following methods:Structural neuroimaging studiesFunctional neuroimaging studiesMetabolic neuroimaging studiesBody fluid biochemical marker studiesCognitive impairment studies.While the early studies tended to focus more on establishing the safety of ECT and finding out whether ECT causes gross microscopic brain damage, the later studies especially since the advent of advanced neuroimaging techniques have been focusing more on a mechanistic understanding of ECT. Hence, the primary objective of the later neuroimaging studies has been to look for structural and functional brain changes which might explain how ECT acts rather than evidence of gross structural damage per se. However, put together, all these studies would enable us to answer our titular question to some satisfaction. [Table 1] and [Table 2] provide an overview of the evidence base in this area.

Structural and Functional Neuroimaging Studies Devanand et al. Reviewed 16 structural neuroimaging studies on the effect of ECT on the brain.[4] Of these, two were pneumoencephalography studies, nine were computed tomography (CT) scan studies, and five were magnetic resonance imaging (MRI) studies. However, most of these studies were retrospective in design, with neuroimaging being done in patients who had received ECT in the past. In the absence of baseline neuroimaging, it would be very difficult to attribute any structural brain changes to ECT. In addition, pneumoencephalography, CT scan, and even early 0.3 T MRI provided images with much lower spatial resolution than what is available today.

The authors concluded that there was no evidence to show that ECT caused any structural damage to the brain.[4] Since then, at least twenty more MRI-based structural neuroimaging studies have studied the effect of ECT on the brain. The earliest MRI studies in the early 1990s focused on detecting structural damage following ECT. All of these studies were prospective in design, with the first MRI scan done at baseline and a second MRI scan performed post ECT.[9],[11],[12],[13],[41] While most of the studies imaged the patient once around 24 h after receiving ECT, some studies performed multiple post ECT neuroimaging in the first 24 h after ECT to better capture the acute changes. A single study by Coffey et al. Followed up the patients for a duration of 6 months and repeated neuroimaging again at 6 months in order to capture any long-term changes following ECT.[10]The most important conclusion which emerged from this early series of studies was that there was no evidence of cortical atrophy, change in ventricle size, or increase in white matter hyperintensities.[4] The next major conclusion was that there appeared to be an increase in the T1 and T2 relaxation time immediately following ECT, which returned to normal within 24 h.

This supported the theory that immediately following ECT, there appears to be a temporary breakdown of the blood–brain barrier, leading to water influx into the brain tissue.[11] The last significant observation by Coffey et al. In 1991 was that there was no significant temporal changes in the total volumes of the frontal lobes, temporal lobes, or amygdala–hippocampal complex.[10] This was, however, something which would later be refuted by high-resolution MRI studies. Nonetheless, one inescapable conclusion of these early studies was that there was no evidence of any gross structural brain changes following administration of ECT. Much later in 2007, Szabo et al. Used diffusion-weighted MRI to image patients in the immediate post ECT period and failed to observe any obvious brain tissue changes following ECT.[17]The next major breakthrough came in 2010 when Nordanskog et al.

Demonstrated that there was a significant increase in the volume of the hippocampus bilaterally following a course of ECT in a cohort of patients with depressive illness.[18] This contradicted the earlier observations by Coffey et al. That there was no volume increase in any part of the brain following ECT.[10] This was quite an exciting finding and was followed by several similar studies. However, the perspective of these studies was quite different from the early studies. In contrast to the early studies looking for the evidence of ECT-related brain damage, the newer studies were focused more on elucidating the mechanism of action of ECT. Further on in 2014, Nordanskog et al.

In a follow-up study showed that though there was a significant increase in the volume of the hippocampus 1 week after a course of ECT, the hippocampal volume returned to the baseline after 6 months.[19] Two other studies in 2013 showed that in addition to the hippocampus, the amygdala also showed significant volume increase following ECT.[20],[21] A series of structural neuroimaging studies after that have expanded on these findings and as of now, gray matter volume increase following ECT has been demonstrated in the hippocampus, amygdala, anterior temporal pole, subgenual cortex,[21] right caudate nucleus, and the whole of the medial temporal lobe (MTL) consisting of the hippocampus, amygdala, insula, and the posterosuperior temporal cortex,[24] para hippocampi, right subgenual anterior cingulate gyrus, and right anterior cingulate gyrus,[25] left cerebellar area VIIa crus I,[29] putamen, caudate nucleus, and nucleus acumbens [31] and clusters of increased cortical thickness involving the temporal pole, middle and superior temporal cortex, insula, and inferior temporal cortex.[27] However, the most consistently reported and replicated finding has been the bilateral increase in the volume of the hippocampus and amygdala. In light of these findings, it has been tentatively suggested that ECT acts by inducing neuronal regeneration in the hippocampus – amygdala complex.[42],[43] However, there are certain inconsistencies to this hypothesis. Till date, only one study – Nordanskog et al., 2014 – has followed study patients for a long term – 6 months in their case. And significantly, the authors found out that after increasing immediately following ECT, the hippocampal volume returns back to baseline by 6 months.[19] This, however, was not associated with the relapse of depressive symptoms. Another area of significant confusion has been the correlation of hippocampal volume increase with improvement of depressive symptoms.

Though almost all studies demonstrate a significant increase in hippocampal volume following ECT, a majority of studies failed to demonstrate a correlation between symptom improvement and hippocampal volume increase.[19],[20],[22],[24],[28] However, a significant minority of volumetric studies have demonstrated correlation between increase in hippocampal and/or amygdala volume and improvement of symptoms.[21],[25],[30]Another set of studies have used diffusion tensor imaging, functional MRI (fMRI), anatomical connectome, and structural network analysis to study the effect of ECT on the brain. The first of these studies by Abbott et al. In 2014 demonstrated that on fMRI, the connectivity between right and left hippocampus was significantly reduced in patients with severe depression. It was also shown that the connectivity was normalized following ECT, and symptom improvement was correlated with an increase in connectivity.[22] In a first of its kind DTI study, Lyden et al. In 2014 demonstrated that fractional anisotropy which is a measure of white matter tract or fiber density is increased post ECT in patients with severe depression in the anterior cingulum, forceps minor, and the dorsal aspect of the left superior longitudinal fasciculus.

The authors suggested that ECT acts to normalize major depressive disorder-related abnormalities in the structural connectivity of the dorsal fronto-limbic pathways.[23] Another DTI study in 2015 constructed large-scale anatomical networks of the human brain – connectomes, based on white matter fiber tractography. The authors found significant reorganization in the anatomical connections involving the limbic structure, temporal lobe, and frontal lobe. It was also found that connection changes between amygdala and para hippocampus correlated with reduction in depressive symptoms.[26] In 2016, Wolf et al. Used a source-based morphometry approach to study the structural networks in patients with depression and schizophrenia and the effect of ECT on the same. It was found that the medial prefrontal cortex/anterior cingulate cortex (ACC/MPFC) network, MTL network, bilateral thalamus, and left cerebellar regions/precuneus exhibited significant difference between healthy controls and the patient population.

It was also demonstrated that administration of ECT leads to significant increase in the network strength of the ACC/MPFC network and the MTL network though the increase in network strength and symptom amelioration were not correlated.[32]Building on these studies, a recently published meta-analysis has attempted a quantitative synthesis of brain volume changes – focusing on hippocampal volume increase following ECT in patients with major depressive disorder and bipolar disorder. The authors initially selected 32 original articles from which six articles met the criteria for quantitative synthesis. The results showed significant increase in the volume of the right and left hippocampus following ECT. For the rest of the brain regions, the heterogeneity in protocols and imaging techniques did not permit a quantitative analysis, and the authors have resorted to a narrative review similar to the present one with similar conclusions.[44] Focusing exclusively on hippocampal volume change in ECT, Oltedal et al. In 2018 conducted a mega-analysis of 281 patients with major depressive disorder treated with ECT enrolled at ten different global sites of the Global ECT-MRI Research Collaboration.[45] Similar to previous studies, there was a significant increase in hippocampal volume bilaterally with a dose–response relationship with the number of ECTs administered.

Furthermore, bilateral (B/L) ECT was associated with an equal increase in volume in both right and left hippocampus, whereas right unilateral ECT was associated with greater volume increase in the right hippocampus. Finally, contrary to expectation, clinical improvement was found to be negatively correlated with hippocampal volume.Thus, a review of the current evidence amply demonstrates that from looking for ECT-related brain damage – and finding none, we have now moved ahead to looking for a mechanistic understanding of the effect of ECT. In this regard, it has been found that ECT does induce structural changes in the brain – a fact which has been seized upon by some to claim that ECT causes brain damage.[46] Such statements should, however, be weighed against the definition of damage as understood by the scientific medical community and patient population. Neuroanatomical changes associated with effective ECT can be better described as ECT-induced brain neuroplasticity or ECT-induced brain neuromodulation rather than ECT-induced brain damage. Metabolic Neuroimaging Studies.

Magnetic Resonance Spectroscopic Imaging Magnetic resonance spectroscopic imaging (MRSI) uses a phase-encoding procedure to map the spatial distribution of magnetic resonance (MR) signals of different molecules. The crucial difference, however, is that while MRI maps the MR signals of water molecules, MRSI maps the MR signals generated by different metabolites – such as N-acetyl aspartate (NAA) and choline-containing compounds. However, the concentration of these metabolites is at least 10,000 times lower than water molecules and hence the signal strength generated would also be correspondingly lower. However, MRSI offers us the unique advantage of studying in vivo the change in the concentration of brain metabolites, which has been of great significance in fields such as psychiatry, neurology, and basic neuroscience research.[47]MRSI studies on ECT in patients with depression have focused largely on four metabolites in the human brain – NAA, choline-containing compounds (Cho) which include majorly cell membrane compounds such as glycerophosphocholine, phosphocholine and a miniscule contribution from acetylcholine, creatinine (Cr) and glutamine and glutamate together (Glx). NAA is located exclusively in the neurons, and is suggested to be a marker of neuronal viability and functionality.[48] Choline-containing compounds (Cho) mainly include the membrane compounds, and an increase in Cho would be suggestive of increased membrane turnover.

Cr serves as a marker of cellular energy metabolism, and its levels are usually expected to remain stable. The regions which have been most widely studied in MRSI studies include the bilateral hippocampus and amygdala, dorsolateral prefrontal cortex (DLPFC), and ACC.Till date, five MRSI studies have measured NAA concentration in the hippocampus before and after ECT. Of these, three studies showed that there is no significant change in the NAA concentration in the hippocampus following ECT.[33],[38],[49] On the other hand, two recent studies have demonstrated a statistically significant reduction in NAA concentration in the hippocampus following ECT.[39],[40] The implications of these results are of significant interest to us in answering our titular question. A normal level of NAA following ECT could signify that there is no significant neuronal death or damage following ECT, while a reduction would signal the opposite. However, a direct comparison between these studies is complicated chiefly due to the different ECT protocols, which has been used in these studies.

It must, however, be acknowledged that the three older studies used 1.5 T MRI, whereas the two newer studies used a higher 3 T MRI which offers betters signal-to-noise ratio and hence lesser risk of errors in the measurement of metabolite concentrations. The authors of a study by Njau et al.[39] argue that a change in NAA levels might reflect reversible changes in neural metabolism rather than a permanent change in the number or density of neurons and also that reduced NAA might point to a change in the ratio of mature to immature neurons, which, in fact, might reflect enhanced adult neurogenesis. Thus, the authors warn that to conclude whether a reduction in NAA concentration is beneficial or harmful would take a simultaneous measurement of cognitive functioning, which was lacking in their study. In 2017, Cano et al. Also demonstrated a significant reduction in NAA/Cr ratio in the hippocampus post ECT.

More significantly, the authors also showed a significant increase in Glx levels in the hippocampus following ECT, which was also associated with an increase in hippocampal volume.[40] To explain these three findings, the authors proposed that ECT produces a neuroinflammatory response in the hippocampus – likely mediated by Glx, which has been known to cause inflammation at higher concentrations, thereby accounting for the increase in hippocampal volume with a reduction in NAA concentration. The cause for the volume increase remains unclear – with the authors speculating that it might be due to neuronal swelling or due to angiogenesis. However, the same study and multiple other past studies [21],[25],[30] have demonstrated that hippocampal volume increase was correlated with clinical improvement following ECT. Thus, we are led to the hypothesis that the same mechanism which drives clinical improvement with ECT is also responsible for the cognitive impairment following ECT. Whether this is a purely neuroinflammatory response or a neuroplastic response or a neuroinflammatory response leading to some form of neuroplasticity is a critical question, which remains to be answered.[40]Studies which have analyzed NAA concentration change in other brain areas have also produced conflicting results.

The ACC is another area which has been studied in some detail utilizing the MRSI technique. In 2003, Pfleiderer et al. Demonstrated that there was no significant change in the NAA and Cho levels in the ACC following ECT. This would seem to suggest that there was no neurogenesis or membrane turnover in the ACC post ECT.[36] However, this finding was contested by Merkl et al. In 2011, who demonstrated that NAA levels were significantly reduced in the left ACC in patients with depression and that these levels were significantly elevated following ECT.[37] This again is contested by Njau et al.

Who showed that NAA levels are significantly reduced following ECT in the left dorsal ACC.[39] A direct comparison of these three studies is complicated by the different ECT and imaging parameters used and hence, no firm conclusion can be made on this point at this stage. In addition to this, one study had demonstrated increased NAA levels in the amygdala following administration of ECT,[34] with a trend level increase in Cho levels, which again is suggestive of neurogenesis and/or neuroplasticity. A review of studies on the DLPFC reveals a similarly confusing picture with one study, each showing no change, reduction, and elevation of concentration of NAA following ECT.[35],[37],[39] Here, again, a direct comparison of the three studies is made difficult by the heterogeneous imaging and ECT protocols followed by them.A total of five studies have analyzed the concentration of choline-containing compounds (Cho) in patients undergoing ECT. Conceptually, an increase in Cho signals is indicative of increased membrane turnover, which is postulated to be associated with synaptogenesis, neurogenesis, and maturation of neurons.[31] Of these, two studies measured Cho concentration in the B/L hippocampus, with contrasting results. Ende et al.

In 2000 demonstrated a significant elevation in Cho levels in B/L hippocampus after ECT, while Jorgensen et al. In 2015 failed to replicate the same finding.[33],[38] Cho levels have also been studied in the amygdala, ACC, and the DLPFC. However, none of these studies showed a significant increase or decrease in Cho levels before and after ECT in the respective brain regions studied. In addition, no significant difference was seen in the pre-ECT Cho levels of patients compared to healthy controls.[34],[36],[37]In review, we must admit that MRSI studies are still at a preliminary stage with significant heterogeneity in ECT protocols, patient population, and regions of the brain studied. At this stage, it is difficult to draw any firm conclusions except to acknowledge the fact that the more recent studies – Njau et al., 2017, Cano, 2017, and Jorgensen et al., 2015 – have shown decrease in NAA concentration and no increase in Cho levels [38],[39],[40] – as opposed to the earlier studies by Ende et al.[33] The view offered by the more recent studies is one of a neuroinflammatory models of action of ECT, probably driving neuroplasticity in the hippocampus.

This would offer a mechanistic understanding of both clinical response and the phenomenon of cognitive impairment associated with ECT. However, this conclusion is based on conjecture, and more work needs to be done in this area. Body Fluid Biochemical Marker Studies Another line of evidence for analyzing the effect of ECT on the human brain is the study of concentration of neurotrophins in the plasma or serum. Neurotrophins are small protein molecules which mediate neuronal survival and development. The most prominent among these is brain-derived neurotrophic factor (BDNF) which plays an important role in neuronal survival, plasticity, and migration.[50] A neurotrophic theory of mood disorders was suggested which hypothesized that depressive disorders are associated with a decreased expression of BDNF in the limbic structures, resulting in the atrophy of these structures.[51] It was also postulated that antidepressant treatment has a neurotrophic effect which reverses the neuronal cell loss, thereby producing a therapeutic effect.

It has been well established that BDNF is decreased in mood disorders.[52] It has also been shown that clinical improvement of depression is associated with increase in BDNF levels.[53] Thus, serum BDNF levels have been tentatively proposed as a biomarker for treatment response in depression. Recent meta-analytic evidence has shown that ECT is associated with significant increase in serum BDNF levels in patients with major depressive disorder.[54] Considering that BDNF is a potent stimulator of neurogenesis, the elevation of serum BDNF levels following ECT lends further credence to the theory that ECT leads to neurogenesis in the hippocampus and other limbic structures, which, in turn, mediates the therapeutic action of ECT. Cognitive Impairment Studies Cognitive impairment has always been the single-most important side effect associated with ECT.[55] Concerns regarding long-term cognitive impairment surfaced soon after the introduction of ECT and since then has grown to become one of the most controversial aspects of ECT.[56] Anti-ECT groups have frequently pointed out to cognitive impairment following ECT as evidence of ECT causing brain damage.[56] A meta-analysis by Semkovska and McLoughlin in 2010 is one of the most detailed studies which had attempted to settle this long-standing debate.[57] The authors reviewed 84 studies (2981 participants), which had used a combined total of 22 standardized neuropsychological tests assessing various cognitive functions before and after ECT in patients diagnosed with major depressive disorder. The different cognitive domains reviewed included processing speed, attention/working memory, verbal episodic memory, visual episodic memory, spatial problem-solving, executive functioning, and intellectual ability. The authors concluded that administration of ECT for depression is associated with significant cognitive impairment in the first few days after ECT administration.

However, it was also seen that impairment in cognitive functioning resolved within a span of 2 weeks and thereafter, a majority of cognitive domains even showed mild improvement compared to the baseline performance. It was also demonstrated that not a single cognitive domain showed persistence of impairment beyond 15 days after ECT.Memory impairment following ECT can be analyzed broadly under two conceptual schemes – one that classifies memory impairment as objective memory impairment and subjective memory impairment and the other that classifies it as impairment in anterograde memory versus impairment in retrograde memory. Objective memory can be roughly defined as the ability to retrieve stored information and can be measured by various standardized neuropsychological tests. Subjective memory or meta-memory, on the other hand, refers to the ability to make judgments about one's ability to retrieve stored information.[58] As described previously, it has been conclusively demonstrated that anterograde memory impairment does not persist beyond 2 weeks after ECT.[57] However, one of the major limitations of this meta-analysis was the lack of evidence on retrograde amnesia following ECT. This is particularly unfortunate considering that it is memory impairment – particularly retrograde amnesia which has received the most attention.[59] In addition, reports of catastrophic retrograde amnesia have been repeatedly held up as sensational evidence of the lasting brain damage produced by ECT.[59] Admittedly, studies on retrograde amnesia are fewer and less conclusive than on anterograde amnesia.[60],[61] At present, the results are conflicting, with some studies finding some impairment in retrograde memory – particularly autobiographical retrograde memory up to 6 months after ECT.[62],[63],[64],[65] However, more recent studies have failed to support this finding.[66],[67] While they do demonstrate an impairment in retrograde memory immediately after ECT, it was seen that this deficit returned to pre-ECT levels within a span of 1–2 months and improved beyond baseline performance at 6 months post ECT.[66] Adding to the confusion are numerous factors which confound the assessment of retrograde amnesia.

It has been shown that depressive symptoms can produce significant impairment of retrograde memory.[68],[69] It has also been demonstrated that sine-wave ECT produces significantly more impairment of retrograde memory as compared to brief-pulse ECT.[70] However, from the 1990s onward, sine-wave ECT has been completely replaced by brief-pulse ECT, and it is unclear as to the implications of cognitive impairment from the sine-wave era in contemporary ECT practice.Another area of concern are reports of subjective memory impairment following ECT. One of the pioneers of research into subjective memory impairment were Squire and Chace who published a series of studies in the 1970s demonstrating the adverse effect of bilateral ECT on subjective assessment of memory.[62],[63],[64],[65] However, most of the studies conducted post 1980 – from when sine-wave ECT was replaced by brief-pulse ECT report a general improvement in subjective memory assessments following ECT.[71] In addition, most of the recent studies have failed to find a significant association between measures of subjective and objective memory.[63],[66],[70],[72],[73],[74] It has also been shown that subjective memory impairment is strongly associated with the severity of depressive symptoms.[75] In light of these facts, the validity and value of measures of subjective memory impairment as a marker of cognitive impairment and brain damage following ECT have been questioned. However, concerns regarding subjective memory impairment and catastrophic retrograde amnesia continue to persist, with significant dissonance between the findings of different research groups and patient self-reports in various media.[57]Some studies reported the possibility of ECT being associated with the development of subsequent dementia.[76],[77] However, a recent large, well-controlled prospective Danish study found that the use of ECT was not associated with elevated incidence of dementia.[78] Conclusion Our titular question is whether ECT leads to brain damage, where damage indicates destruction or degeneration of nerves or nerve tracts in the brain, which leads to loss of function. This issue was last addressed by Devanand et al. In 1994 since which time our understanding of ECT has grown substantially, helped particularly by the advent of modern-day neuroimaging techniques which we have reviewed in detail.

And, what these studies reveal is rather than damaging the brain, ECT has a neuromodulatory effect on the brain. The various lines of evidence – structural neuroimaging studies, functional neuroimaging studies, neurochemical and metabolic studies, and serum BDNF studies all point toward this. These neuromodulatory changes have been localized to the hippocampus, amygdala, and certain other parts of the limbic system. How exactly these changes mediate the improvement of depressive symptoms is a question that remains unanswered. However, there is little by way of evidence from neuroimaging studies which indicates that ECT causes destruction or degeneration of neurons.

Though cognitive impairment studies do show that there is objective impairment of certain functions – particularly memory immediately after ECT, these impairments are transient with full recovery within a span of 2 weeks. Perhaps, the single-most important unaddressed concern is retrograde amnesia, which has been shown to persist for up to 2 months post ECT. In this regard, the recent neurometabolic studies have offered a tentative mechanism of action of ECT, producing a transient inflammation in the limbic cortex, which, in turn, drives neurogenesis, thereby exerting a neuromodulatory effect. This hypothesis would explain both the cognitive adverse effects of ECT – due to the transient inflammation – and the long-term improvement in mood – neurogenesis in the hippocampus. Although unproven at present, such a hypothesis would imply that cognitive impairment is tied in with the mechanism of action of ECT and not an indicator of damage to the brain produced by ECT.The review of literature suggests that ECT does cause at least structural and functional changes in the brain, and these are in all probability related to the effects of the ECT.

However, these cannot be construed as brain damage as is usually understood. Due to the relative scarcity of data that directly examines the question of whether ECT causes brain damage, it is not possible to conclusively answer this question. However, in light of enduring ECT survivor accounts, there is a need to design studies that specifically answer this question.Financial support and sponsorshipNil.Conflicts of interestThere are no conflicts of interest. References 1.Payne NA, Prudic J. Electroconvulsive therapy.

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34.Michael N, Erfurth A, Ohrmann P, Arolt V, Heindel W, Pfleiderer B. Metabolic changes within the left dorsolateral prefrontal cortex occurring with electroconvulsive therapy in patients with treatment resistant unipolar depression. Psychol Med 2003;33:1277-84. 35.Michael N, Erfurth A, Ohrmann P, Arolt V, Heindel W, Pfleiderer B. Neurotrophic effects of electroconvulsive therapy.

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37.Merkl A, Schubert F, Quante A, Luborzewski A, Brakemeier EL, Grimm S, et al. Abnormal cingulate and prefrontal cortical neurochemistry in major depression after electroconvulsive therapy. Biol Psychiatry 2011;69:772-9. 38.Jorgensen A, Magnusson P, Hanson LG, Kirkegaard T, Benveniste H, Lee H, et al. Regional brain volumes, diffusivity, and metabolite changes after electroconvulsive therapy for severe depression.

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43.Singh A, Kar SK. How electroconvulsive therapy works?. Understanding the neurobiological mechanisms. Clin Psychopharmacol Neurosci 2017;15:210-21. 44.Gbyl K, Videbech P.

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The synaptic consolidation hypothesis. Prog Neurobiol 2005;76:99-125. 51.Duman RS, Monteggia LM. A neurotrophic model for stress-related mood disorders. Biol Psychiatry 2006;59:1116-27.

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A systematic review and meta-analysis of clinical studies on major depression and BDNF levels. Implications for the role of neuroplasticity in depression. Int J Neuropsychopharmacol 2008;11:1169-80. 54.Rocha RB, Dondossola ER, Grande AJ, Colonetti T, Ceretta LB, Passos IC, et al. Increased BDNF levels after electroconvulsive therapy in patients with major depressive disorder.

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58.Tulving E, Madigan SA. Memory and verbal learning. Annu Rev Psychol 1970;21:437-84. 59.Rose D, Fleischmann P, Wykes T, Leese M, Bindman J. Patients' perspectives on electroconvulsive therapy.

Systematic review. BMJ 2003;326:1363. 60.Semkovska M, McLoughlin DM. Measuring retrograde autobiographical amnesia following electroconvulsive therapy. Historical perspective and current issues.

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62.Squire LR, Chace PM. Memory functions six to nine months after electroconvulsive therapy. Arch Gen Psychiatry 1975;32:1557-64. 63.Squire LR, Slater PC. Electroconvulsive therapy and complaints of memory dysfunction.

A prospective three-year follow-up study. Br J Psychiatry 1983;142:1-8. 64.Squire LR, Slater PC, Miller PL. Retrograde amnesia and bilateral electroconvulsive therapy. Long-term follow-up.

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Subjective memory complaints prior to and following electroconvulsive therapy. Biol Psychiatry 1996;39:346-56. 76.Berggren Š, Gustafson L, Höglund P, Johanson A. A long-term longitudinal follow-up of depressed patients treated with ECT with special focus on development of dementia. J Affect Disord 2016;200:15-24.

77.Brodaty H, Hickie I, Mason C, Prenter L. A prospective follow-up study of ECT outcome in older depressed patients. J Affect Disord 2000;60:101-11. 78.Osler M, Rozing MP, Christensen GT, Andersen PK, Jørgensen MB. Electroconvulsive therapy and risk of dementia in patients with affective disorders.

A cohort study. Lancet Psychiatry 2018;5:348-56. Correspondence Address:Dr. Shubh Mohan SinghDepartment of Psychiatry, Postgraduate Institute of Medical Education and Research, Chandigarh IndiaSource of Support. None, Conflict of Interest.

NoneDOI. 10.4103/psychiatry.IndianJPsychiatry_239_19 Tables [Table 1], [Table 2].

How to prices of levitra cite this article:Singh O P. Aftermath of celebrity suicide – Media coverage and role of psychiatrists. Indian J Psychiatry 2020;62:337-8Celebrity suicide is one of the highly publicized events in our prices of levitra country.

Indians got a glimpse of this following an unfortunate incident where a popular Hindi film actor died of suicide. As expected, prices of levitra the media went into a frenzy as newspapers, news channels, and social media were full of stories providing minute details of the suicidal act. Some even going as far as highlighting the color of the cloth used in the suicide as well as showing the lifeless body of the actor.

All kinds of personal details were dug up, and speculations and hypotheses became the order of the day in the next few days that followed. In the process, reputations of many people associated with the actor were besmirched and their private and personal details were freely and blatantly broadcast and discussed on electronic, print, and social media prices of levitra. We understand that media houses have their own need and duty to report and sensationalize news for increasing their visibility (aka TRP), but such reporting has huge impacts on the mental health of the vulnerable population.The impact of this was soon realized when many incidents of copycat suicide were reported from all over the country within a few days of the incident.

Psychiatrists suddenly started getting distress calls from their patients in despair with prices of levitra increased suicidal ideation. This has become a major area of concern for the psychiatry community.The Indian Psychiatric Society has been consistently trying to engage with media to promote ethical reporting of suicide. Section 24 (1) of Mental Health Care Act, 2017, forbids publication of photograph of mentally ill person without his consent.[1] The Press Council of India prices of levitra has adopted the guidelines of World Health Organization report on Preventing Suicide.

A resource for media professionals, which came out with an advisory to be followed by media in reporting cases of suicide. It includes points forbidding them from putting stories in prominent positions and unduly repeating them, explicitly describing the method used, providing details about the site/location, using sensational headlines, or using photographs and video footage of the incident.[2] Unfortunately, the advisory seems to have little effect in the aftermath of celebrity suicides. Channels were full of speculations prices of levitra about the person's mental condition and illness and also his relationships and finances.

Many fictional accounts of his symptoms and illness were touted, which is not only against the ethics but is also contrary to MHCA, 2017.[1]It went to the extent that the name of his psychiatrist was mentioned and quotes were attributed to him without taking any account from him. The Indian Psychiatric prices of levitra Society has written to the Press Council of India underlining this concern and asking for measures to ensure ethics in reporting suicide.While there is a need for engagement with media to make them aware of the grave impact of negative suicide reporting on the lives of many vulnerable persons, there is even a more urgent need for training of psychiatrists regarding the proper way of interaction with media. This has been amply brought out in the aftermath of this incident.

Many psychiatrists and mental health professionals were called by media houses to prices of levitra comment on the episode. Many psychiatrists were quoted, or “misquoted,” or “quoted out of context,” commenting on the life of a person whom they had never examined and had no “professional authority” to do so. There were even stories with byline of a psychiatrist where the content provided was not only unscientific but also way beyond the expertise of a psychiatrist.

These types of viewpoints perpetuate stigma, myths, and “misleading concepts” about prices of levitra psychiatry and are detrimental to the image of psychiatry in addition to doing harm and injustice to our patients. Hence, the need to formulate a guideline for interaction of psychiatrists with the media is imperative.In the infamous Goldwater episode, 12,356 psychiatrists were asked to cast opinion about the fitness of Barry Goldwater for presidential candidature. Out of 2417 respondents, 1189 psychiatrists reported him to be mentally unfit while none had actually examined him.[3] This led to the formulation of “The Goldwater Rule” by the American Psychiatric Association in 1973,[4] but we have witnessed the same phenomenon at the time of presidential candidature of Donald Trump.Psychiatrists should be encouraged to interact with media to provide scientific information prices of levitra about mental illnesses and reduction of stigma, but “statements to the media” can be a double-edged sword, and we should know about the rules of engagements and boundaries of interactions.

Methods and principles of interaction with media should form a part of our training curriculum. Many professional societies have prices of levitra guidelines and resource books for interacting with media, and psychiatrists should familiarize themselves with these documents. The Press Council guideline is likely to prompt reporters to seek psychiatrists for their expert opinion.

It is useful for them to have a template ready with suicide rates, emphasizing multicausality of suicide, role of mental disorders, as well as help available.[5]It is about time that the Indian Psychiatric Society formulated its own guidelines laying down the broad principles and boundaries governing the interaction of Indian psychiatrists with the media. Till then, it is desirable to be guided by the following broad principles:It should be assumed that no statement goes “off the record” as the media person is most likely recording the interview, and we should also record any prices of levitra such conversation from our endIt should be clarified in which capacity comments are being made – professional, personal, or as a representative of an organizationOne should not comment on any person whom he has not examinedPsychiatrists should take any such opportunity to educate the public about mental health issuesThe comments should be justified and limited by the boundaries of scientific knowledge available at the moment. References Correspondence Address:Dr.

O P prices of levitra SinghAA 304, Ashabari Apartments, O/31, Baishnabghata, Patuli Township, Kolkata - 700 094, West Bengal IndiaSource of Support. None, Conflict of Interest. NoneDOI.

10.4103/psychiatry.IndianJPsychiatry_816_20Abstract Electroconvulsive therapy (ECT) is an effective modality of treatment for a variety of psychiatric disorders. However, it has always been accused of being a coercive, unethical, and dangerous modality of treatment. The dangerousness of ECT has been mainly attributed to its claimed ability to cause brain damage.

This narrative review aims to provide an update of the evidence with regard to whether the practice of ECT is associated with damage to the brain. An accepted definition of brain damage remains elusive. There are also ethical and technical problems in designing studies that look at this question specifically.

Thus, even though there are newer technological tools and innovations, any review attempting to answer this question would have to take recourse to indirect methods. These include structural, functional, and metabolic neuroimaging. Body fluid biochemical marker studies.

And follow-up studies of cognitive impairment and incidence of dementia in people who have received ECT among others. The review of literature and present evidence suggests that ECT has a demonstrable impact on the structure and function of the brain. However, there is a lack of evidence at present to suggest that ECT causes brain damage.Keywords.

Adverse effect, brain damage, electroconvulsive therapyHow to cite this article:Jolly AJ, Singh SM. Does electroconvulsive therapy cause brain damage. An update.

Indian J Psychiatry 2020;62:339-53 Introduction Electroconvulsive therapy (ECT) as a modality of treatment for psychiatric disorders has existed at least since 1938.[1] ECT is an effective modality of treatment for various psychiatric disorders. However, from the very beginning, the practice of ECT has also faced resistance from various groups who claim that it is coercive and harmful.[2] While the ethical aspects of the practice of ECT have been dealt with elsewhere, the question of harmfulness or brain damage consequent upon the passage of electric current needs to be examined afresh in light of technological advances and new knowledge.[3]The question whether ECT causes brain damage was reviewed in a holistic fashion by Devanand et al. In the mid-1990s.[4],[5] The authors had attempted to answer this question by reviewing the effect of ECT on the brain in various areas – cognitive side effects, structural neuroimaging studies, neuropathologic studies of patients who had received ECT, autopsy studies of epileptic patients, and finally animal ECS studies.

The authors had concluded that ECT does not produce brain damage.This narrative review aims to update the evidence with regard to whether ECT causes brain damage by reviewing relevant literature from 1994 to the present time. Framing the Question The Oxford Dictionary defines damage as physical harm that impairs the value, usefulness, or normal function of something.[6] Among medical dictionaries, the Peter Collins Dictionary defines damage as harm done to things (noun) or to harm something (verb).[7] Brain damage is defined by the British Medical Association Medical Dictionary as degeneration or death of nerve cells and tracts within the brain that may be localized to a particular area of the brain or diffuse.[8] Going by such a definition, brain damage in the context of ECT should refer to death or degeneration of brain tissue, which results in the impairment of functioning of the brain. The importance of precisely defining brain damage shall become evident subsequently in this review.There are now many more tools available to investigate the structure and function of brain in health and illness.

However, there are obvious ethical issues in designing human studies that are designed to answer this specific question. Therefore, one must necessarily take recourse to indirect evidences available through studies that have been designed to answer other research questions. These studies have employed the following methods:Structural neuroimaging studiesFunctional neuroimaging studiesMetabolic neuroimaging studiesBody fluid biochemical marker studiesCognitive impairment studies.While the early studies tended to focus more on establishing the safety of ECT and finding out whether ECT causes gross microscopic brain damage, the later studies especially since the advent of advanced neuroimaging techniques have been focusing more on a mechanistic understanding of ECT.

Hence, the primary objective of the later neuroimaging studies has been to look for structural and functional brain changes which might explain how ECT acts rather than evidence of gross structural damage per se. However, put together, all these studies would enable us to answer our titular question to some satisfaction. [Table 1] and [Table 2] provide an overview of the evidence base in this area.

Structural and Functional Neuroimaging Studies Devanand et al. Reviewed 16 structural neuroimaging studies on the effect of ECT on the brain.[4] Of these, two were pneumoencephalography studies, nine were computed tomography (CT) scan studies, and five were magnetic resonance imaging (MRI) studies. However, most of these studies were retrospective in design, with neuroimaging being done in patients who had received ECT in the past.

In the absence of baseline neuroimaging, it would be very difficult to attribute any structural brain changes to ECT. In addition, pneumoencephalography, CT scan, and even early 0.3 T MRI provided images with much lower spatial resolution than what is available today. The authors concluded that there was no evidence to show that ECT caused any structural damage to the brain.[4] Since then, at least twenty more MRI-based structural neuroimaging studies have studied the effect of ECT on the brain.

The earliest MRI studies in the early 1990s focused on detecting structural damage following ECT. All of these studies were prospective in design, with the first MRI scan done at baseline and a second MRI scan performed post ECT.[9],[11],[12],[13],[41] While most of the studies imaged the patient once around 24 h after receiving ECT, some studies performed multiple post ECT neuroimaging in the first 24 h after ECT to better capture the acute changes. A single study by Coffey et al.

Followed up the patients for a duration of 6 months and repeated neuroimaging again at 6 months in order to capture any long-term changes following ECT.[10]The most important conclusion which emerged from this early series of studies was that there was no evidence of cortical atrophy, change in ventricle size, or increase in white matter hyperintensities.[4] The next major conclusion was that there appeared to be an increase in the T1 and T2 relaxation time immediately following ECT, which returned to normal within 24 h. This supported the theory that immediately following ECT, there appears to be a temporary breakdown of the blood–brain barrier, leading to water influx into the brain tissue.[11] The last significant observation by Coffey et al. In 1991 was that there was no significant temporal changes in the total volumes of the frontal lobes, temporal lobes, or amygdala–hippocampal complex.[10] This was, however, something which would later be refuted by high-resolution MRI studies.

Nonetheless, one inescapable conclusion of these early studies was that there was no evidence of any gross structural brain changes following administration of ECT. Much later in 2007, Szabo et al. Used diffusion-weighted MRI to image patients in the immediate post ECT period and failed to observe any obvious brain tissue changes following ECT.[17]The next major breakthrough came in 2010 when Nordanskog et al.

Demonstrated that there was a significant increase in the volume of the hippocampus bilaterally following a course of ECT in a cohort of patients with depressive illness.[18] This contradicted the earlier observations by Coffey et al. That there was no volume increase in any part of the brain following ECT.[10] This was quite an exciting finding and was followed by several similar studies. However, the perspective of these studies was quite different from the early studies.

In contrast to the early studies looking for the evidence of ECT-related brain damage, the newer studies were focused more on elucidating the mechanism of action of ECT. Further on in 2014, Nordanskog et al. In a follow-up study showed that though there was a significant increase in the volume of the hippocampus 1 week after a course of ECT, the hippocampal volume returned to the baseline after 6 months.[19] Two other studies in 2013 showed that in addition to the hippocampus, the amygdala also showed significant volume increase following ECT.[20],[21] A series of structural neuroimaging studies after that have expanded on these findings and as of now, gray matter volume increase following ECT has been demonstrated in the hippocampus, amygdala, anterior temporal pole, subgenual cortex,[21] right caudate nucleus, and the whole of the medial temporal lobe (MTL) consisting of the hippocampus, amygdala, insula, and the posterosuperior temporal cortex,[24] para hippocampi, right subgenual anterior cingulate gyrus, and right anterior cingulate gyrus,[25] left cerebellar area VIIa crus I,[29] putamen, caudate nucleus, and nucleus acumbens [31] and clusters of increased cortical thickness involving the temporal pole, middle and superior temporal cortex, insula, and inferior temporal cortex.[27] However, the most consistently reported and replicated finding has been the bilateral increase in the volume of the hippocampus and amygdala.

In light of these findings, it has been tentatively suggested that ECT acts by inducing neuronal regeneration in the hippocampus – amygdala complex.[42],[43] However, there are certain inconsistencies to this hypothesis. Till date, only one study – Nordanskog et al., 2014 – has followed study patients for a long term – 6 months in their case. And significantly, the authors found out that after increasing immediately following ECT, the hippocampal volume returns back to baseline by 6 months.[19] This, however, was not associated with the relapse of depressive symptoms.

Another area of significant confusion has been the correlation of hippocampal volume increase with improvement of depressive symptoms. Though almost all studies demonstrate a significant increase in hippocampal volume following ECT, a majority of studies failed to demonstrate a correlation between symptom improvement and hippocampal volume increase.[19],[20],[22],[24],[28] However, a significant minority of volumetric studies have demonstrated correlation between increase in hippocampal and/or amygdala volume and improvement of symptoms.[21],[25],[30]Another set of studies have used diffusion tensor imaging, functional MRI (fMRI), anatomical connectome, and structural network analysis to study the effect of ECT on the brain. The first of these studies by Abbott et al.

In 2014 demonstrated that on fMRI, the connectivity between right and left hippocampus was significantly reduced in patients with severe depression. It was also shown that the connectivity was normalized following ECT, and symptom improvement was correlated with an increase in connectivity.[22] In a first of its kind DTI study, Lyden et al. In 2014 demonstrated that fractional anisotropy which is a measure of white matter tract or fiber density is increased post ECT in patients with severe depression in the anterior cingulum, forceps minor, and the dorsal aspect of the left superior longitudinal fasciculus.

The authors suggested that ECT acts to normalize major depressive disorder-related abnormalities in the structural connectivity of the dorsal fronto-limbic pathways.[23] Another DTI study in 2015 constructed large-scale anatomical networks of the human brain – connectomes, based on white matter fiber tractography. The authors found significant reorganization in the anatomical connections involving the limbic structure, temporal lobe, and frontal lobe. It was also found that connection changes between amygdala and para hippocampus correlated with reduction in depressive symptoms.[26] In 2016, Wolf et al.

Used a source-based morphometry approach to study the structural networks in patients with depression and schizophrenia and the effect of ECT on the same. It was found that the medial prefrontal cortex/anterior cingulate cortex (ACC/MPFC) network, MTL network, bilateral thalamus, and left cerebellar regions/precuneus exhibited significant difference between healthy controls and the patient population. It was also demonstrated that administration of ECT leads to significant increase in the network strength of the ACC/MPFC network and the MTL network though the increase in network strength and symptom amelioration were not correlated.[32]Building on these studies, a recently published meta-analysis has attempted a quantitative synthesis of brain volume changes – focusing on hippocampal volume increase following ECT in patients with major depressive disorder and bipolar disorder.

The authors initially selected 32 original articles from which six articles met the criteria for quantitative synthesis. The results showed significant increase in the volume of the right and left hippocampus following ECT. For the rest of the brain regions, the heterogeneity in protocols and imaging techniques did not permit a quantitative analysis, and the authors have resorted to a narrative review similar to the present one with similar conclusions.[44] Focusing exclusively on hippocampal volume change in ECT, Oltedal et al.

In 2018 conducted a mega-analysis of 281 patients with major depressive disorder treated with ECT enrolled at ten different global sites of the Global ECT-MRI Research Collaboration.[45] Similar to previous studies, there was a significant increase in hippocampal volume bilaterally with a dose–response relationship with the number of ECTs administered. Furthermore, bilateral (B/L) ECT was associated with an equal increase in volume in both right and left hippocampus, whereas right unilateral ECT was associated with greater volume increase in the right hippocampus. Finally, contrary to expectation, clinical improvement was found to be negatively correlated with hippocampal volume.Thus, a review of the current evidence amply demonstrates that from looking for ECT-related brain damage – and finding none, we have now moved ahead to looking for a mechanistic understanding of the effect of ECT.

In this regard, it has been found that ECT does induce structural changes in the brain – a fact which has been seized upon by some to claim that ECT causes brain damage.[46] Such statements should, however, be weighed against the definition of damage as understood by the scientific medical community and patient population. Neuroanatomical changes associated with effective ECT can be better described as ECT-induced brain neuroplasticity or ECT-induced brain neuromodulation rather than ECT-induced brain damage. Metabolic Neuroimaging Studies.

Magnetic Resonance Spectroscopic Imaging Magnetic resonance spectroscopic imaging (MRSI) uses a phase-encoding procedure to map the spatial distribution of magnetic resonance (MR) signals of different molecules. The crucial difference, however, is that while MRI maps the MR signals of water molecules, MRSI maps the MR signals generated by different metabolites – such as N-acetyl aspartate (NAA) and choline-containing compounds. However, the concentration of these metabolites is at least 10,000 times lower than water molecules and hence the signal strength generated would also be correspondingly lower.

However, MRSI offers us the unique advantage of studying in vivo the change in the concentration of brain metabolites, which has been of great significance in fields such as psychiatry, neurology, and basic neuroscience research.[47]MRSI studies on ECT in patients with depression have focused largely on four metabolites in the human brain – NAA, choline-containing compounds (Cho) which include majorly cell membrane compounds such as glycerophosphocholine, phosphocholine and a miniscule contribution from acetylcholine, creatinine (Cr) and glutamine and glutamate together (Glx). NAA is located exclusively in the neurons, and is suggested to be a marker of neuronal viability and functionality.[48] Choline-containing compounds (Cho) mainly include the membrane compounds, and an increase in Cho would be suggestive of increased membrane turnover. Cr serves as a marker of cellular energy metabolism, and its levels are usually expected to remain stable.

The regions which have been most widely studied in MRSI studies include the bilateral hippocampus and amygdala, dorsolateral prefrontal cortex (DLPFC), and ACC.Till date, five MRSI studies have measured NAA concentration in the hippocampus before and after ECT. Of these, three studies showed that there is no significant change in the NAA concentration in the hippocampus following ECT.[33],[38],[49] On the other hand, two recent studies have demonstrated a statistically significant reduction in NAA concentration in the hippocampus following ECT.[39],[40] The implications of these results are of significant interest to us in answering our titular question. A normal level of NAA following ECT could signify that there is no significant neuronal death or damage following ECT, while a reduction would signal the opposite.

However, a direct comparison between these studies is complicated chiefly due to the different ECT protocols, which has been used in these studies. It must, however, be acknowledged that the three older studies used 1.5 T MRI, whereas the two newer studies used a higher 3 T MRI which offers betters signal-to-noise ratio and hence lesser risk of errors in the measurement of metabolite concentrations. The authors of a study by Njau et al.[39] argue that a change in NAA levels might reflect reversible changes in neural metabolism rather than a permanent change in the number or density of neurons and also that reduced NAA might point to a change in the ratio of mature to immature neurons, which, in fact, might reflect enhanced adult neurogenesis.

Thus, the authors warn that to conclude whether a reduction in NAA concentration is beneficial or harmful would take a simultaneous measurement of cognitive functioning, which was lacking in their study. In 2017, Cano et al. Also demonstrated a significant reduction in NAA/Cr ratio in the hippocampus post ECT.

More significantly, the authors also showed a significant increase in Glx levels in the hippocampus following ECT, which was also associated with an increase in hippocampal volume.[40] To explain these three findings, the authors proposed that ECT produces a neuroinflammatory response in the hippocampus – likely mediated by Glx, which has been known to cause inflammation at higher concentrations, thereby accounting for the increase in hippocampal volume with a reduction in NAA concentration. The cause for the volume increase remains unclear – with the authors speculating that it might be due to neuronal swelling or due to angiogenesis. However, the same study and multiple other past studies [21],[25],[30] have demonstrated that hippocampal volume increase was correlated with clinical improvement following ECT.

Thus, we are led to the hypothesis that the same mechanism which drives clinical improvement with ECT is also responsible for the cognitive impairment following ECT. Whether this is a purely neuroinflammatory response or a neuroplastic response or a neuroinflammatory response leading to some form of neuroplasticity is a critical question, which remains to be answered.[40]Studies which have analyzed NAA concentration change in other brain areas have also produced conflicting results. The ACC is another area which has been studied in some detail utilizing the MRSI technique.

In 2003, Pfleiderer et al. Demonstrated that there was no significant change in the NAA and Cho levels in the ACC following ECT. This would seem to suggest that there was no neurogenesis or membrane turnover in the ACC post ECT.[36] However, this finding was contested by Merkl et al.

In 2011, who demonstrated that NAA levels were significantly reduced in the left ACC in patients with depression and that these levels were significantly elevated following ECT.[37] This again is contested by Njau et al. Who showed that NAA levels are significantly reduced following ECT in the left dorsal ACC.[39] A direct comparison of these three studies is complicated by the different ECT and imaging parameters used and hence, no firm conclusion can be made on this point at this stage. In addition to this, one study had demonstrated increased NAA levels in the amygdala following administration of ECT,[34] with a trend level increase in Cho levels, which again is suggestive of neurogenesis and/or neuroplasticity.

A review of studies on the DLPFC reveals a similarly confusing picture with one study, each showing no change, reduction, and elevation of concentration of NAA following ECT.[35],[37],[39] Here, again, a direct comparison of the three studies is made difficult by the heterogeneous imaging and ECT protocols followed by them.A total of five studies have analyzed the concentration of choline-containing compounds (Cho) in patients undergoing ECT. Conceptually, an increase in Cho signals is indicative of increased membrane turnover, which is postulated to be associated with synaptogenesis, neurogenesis, and maturation of neurons.[31] Of these, two studies measured Cho concentration in the B/L hippocampus, with contrasting results. Ende et al.

In 2000 demonstrated a significant elevation in Cho levels in B/L hippocampus after ECT, while Jorgensen et al. In 2015 failed to replicate the same finding.[33],[38] Cho levels have also been studied in the amygdala, ACC, and the DLPFC. However, none of these studies showed a significant increase or decrease in Cho levels before and after ECT in the respective brain regions studied.

In addition, no significant difference was seen in the pre-ECT Cho levels of patients compared to healthy controls.[34],[36],[37]In review, we must admit that MRSI studies are still at a preliminary stage with significant heterogeneity in ECT protocols, patient population, and regions of the brain studied. At this stage, it is difficult to draw any firm conclusions except to acknowledge the fact that the more recent studies – Njau et al., 2017, Cano, 2017, and Jorgensen et al., 2015 – have shown decrease in NAA concentration and no increase in Cho levels [38],[39],[40] – as opposed to the earlier studies by Ende et al.[33] The view offered by the more recent studies is one of a neuroinflammatory models of action of ECT, probably driving neuroplasticity in the hippocampus. This would offer a mechanistic understanding of both clinical response and the phenomenon of cognitive impairment associated with ECT.

However, this conclusion is based on conjecture, and more work needs to be done in this area. Body Fluid Biochemical Marker Studies Another line of evidence for analyzing the effect of ECT on the human brain is the study of concentration of neurotrophins in the plasma or serum. Neurotrophins are small protein molecules which mediate neuronal survival and development.

The most prominent among these is brain-derived neurotrophic factor (BDNF) which plays an important role in neuronal survival, plasticity, and migration.[50] A neurotrophic theory of mood disorders was suggested which hypothesized that depressive disorders are associated with a decreased expression of BDNF in the limbic structures, resulting in the atrophy of these structures.[51] It was also postulated that antidepressant treatment has a neurotrophic effect which reverses the neuronal cell loss, thereby producing a therapeutic effect. It has been well established that BDNF is decreased in mood disorders.[52] It has also been shown that clinical improvement of depression is associated with increase in BDNF levels.[53] Thus, serum BDNF levels have been tentatively proposed as a biomarker for treatment response in depression. Recent meta-analytic evidence has shown that ECT is associated with significant increase in serum BDNF levels in patients with major depressive disorder.[54] Considering that BDNF is a potent stimulator of neurogenesis, the elevation of serum BDNF levels following ECT lends further credence to the theory that ECT leads to neurogenesis in the hippocampus and other limbic structures, which, in turn, mediates the therapeutic action of ECT.

Cognitive Impairment Studies Cognitive impairment has always been the single-most important side effect associated with ECT.[55] Concerns regarding long-term cognitive impairment surfaced soon after the introduction of ECT and since then has grown to become one of the most controversial aspects of ECT.[56] Anti-ECT groups have frequently pointed out to cognitive impairment following ECT as evidence of ECT causing brain damage.[56] A meta-analysis by Semkovska and McLoughlin in 2010 is one of the most detailed studies which had attempted to settle this long-standing debate.[57] The authors reviewed 84 studies (2981 participants), which had used a combined total of 22 standardized neuropsychological tests assessing various cognitive functions before and after ECT in patients diagnosed with major depressive disorder. The different cognitive domains reviewed included processing speed, attention/working memory, verbal episodic memory, visual episodic memory, spatial problem-solving, executive functioning, and intellectual ability. The authors concluded that administration of ECT for depression is associated with significant cognitive impairment in the first few days after ECT administration.

However, it was also seen that impairment in cognitive functioning resolved within a span of 2 weeks and thereafter, a majority of cognitive domains even showed mild improvement compared to the baseline performance. It was also demonstrated that not a single cognitive domain showed persistence of impairment beyond 15 days after ECT.Memory impairment following ECT can be analyzed broadly under two conceptual schemes – one that classifies memory impairment as objective memory impairment and subjective memory impairment and the other that classifies it as impairment in anterograde memory versus impairment in retrograde memory. Objective memory can be roughly defined as the ability to retrieve stored information and can be measured by various standardized neuropsychological tests.

Subjective memory or meta-memory, on the other hand, refers to the ability to make judgments about one's ability to retrieve stored information.[58] As described previously, it has been conclusively demonstrated that anterograde memory impairment does not persist beyond 2 weeks after ECT.[57] However, one of the major limitations of this meta-analysis was the lack of evidence on retrograde amnesia following ECT. This is particularly unfortunate considering that it is memory impairment – particularly retrograde amnesia which has received the most attention.[59] In addition, reports of catastrophic retrograde amnesia have been repeatedly held up as sensational evidence of the lasting brain damage produced by ECT.[59] Admittedly, studies on retrograde amnesia are fewer and less conclusive than on anterograde amnesia.[60],[61] At present, the results are conflicting, with some studies finding some impairment in retrograde memory – particularly autobiographical retrograde memory up to 6 months after ECT.[62],[63],[64],[65] However, more recent studies have failed to support this finding.[66],[67] While they do demonstrate an impairment in retrograde memory immediately after ECT, it was seen that this deficit returned to pre-ECT levels within a span of 1–2 months and improved beyond baseline performance at 6 months post ECT.[66] Adding to the confusion are numerous factors which confound the assessment of retrograde amnesia. It has been shown that depressive symptoms can produce significant impairment of retrograde memory.[68],[69] It has also been demonstrated that sine-wave ECT produces significantly more impairment of retrograde memory as compared to brief-pulse ECT.[70] However, from the 1990s onward, sine-wave ECT has been completely replaced by brief-pulse ECT, and it is unclear as to the implications of cognitive impairment from the sine-wave era in contemporary ECT practice.Another area of concern are reports of subjective memory impairment following ECT.

One of the pioneers of research into subjective memory impairment were Squire and Chace who published a series of studies in the 1970s demonstrating the adverse effect of bilateral ECT on subjective assessment of memory.[62],[63],[64],[65] However, most of the studies conducted post 1980 – from when sine-wave ECT was replaced by brief-pulse ECT report a general improvement in subjective memory assessments following ECT.[71] In addition, most of the recent studies have failed to find a significant association between measures of subjective and objective memory.[63],[66],[70],[72],[73],[74] It has also been shown that subjective memory impairment is strongly associated with the severity of depressive symptoms.[75] In light of these facts, the validity and value of measures of subjective memory impairment as a marker of cognitive impairment and brain damage following ECT have been questioned. However, concerns regarding subjective memory impairment and catastrophic retrograde amnesia continue to persist, with significant dissonance between the findings of different research groups and patient self-reports in various media.[57]Some studies reported the possibility of ECT being associated with the development of subsequent dementia.[76],[77] However, a recent large, well-controlled prospective Danish study found that the use of ECT was not associated with elevated incidence of dementia.[78] Conclusion Our titular question is whether ECT leads to brain damage, where damage indicates destruction or degeneration of nerves or nerve tracts in the brain, which leads to loss of function. This issue was last addressed by Devanand et al.

In 1994 since which time our understanding of ECT has grown substantially, helped particularly by the advent of modern-day neuroimaging techniques which we have reviewed in detail. And, what these studies reveal is rather than damaging the brain, ECT has a neuromodulatory effect on the brain. The various lines of evidence – structural neuroimaging studies, functional neuroimaging studies, neurochemical and metabolic studies, and serum BDNF studies all point toward this.

These neuromodulatory changes have been localized to the hippocampus, amygdala, and certain other parts of the limbic system. How exactly these changes mediate the improvement of depressive symptoms is a question that remains unanswered. However, there is little by way of evidence from neuroimaging studies which indicates that ECT causes destruction or degeneration of neurons.

Though cognitive impairment studies do show that there is objective impairment of certain functions – particularly memory immediately after ECT, these impairments are transient with full recovery within a span of 2 weeks. Perhaps, the single-most important unaddressed concern is retrograde amnesia, which has been shown to persist for up to 2 months post ECT. In this regard, the recent neurometabolic studies have offered a tentative mechanism of action of ECT, producing a transient inflammation in the limbic cortex, which, in turn, drives neurogenesis, thereby exerting a neuromodulatory effect.

This hypothesis would explain both the cognitive adverse effects of ECT – due to the transient inflammation – and the long-term improvement in mood – neurogenesis in the hippocampus. Although unproven at present, such a hypothesis would imply that cognitive impairment is tied in with the mechanism of action of ECT and not an indicator of damage to the brain produced by ECT.The review of literature suggests that ECT does cause at least structural and functional changes in the brain, and these are in all probability related to the effects of the ECT. However, these cannot be construed as brain damage as is usually understood.

Due to the relative scarcity of data that directly examines the question of whether ECT causes brain damage, it is not possible to conclusively answer this question. However, in light of enduring ECT survivor accounts, there is a need to design studies that specifically answer this question.Financial support and sponsorshipNil.Conflicts of interestThere are no conflicts of interest. References 1.Payne NA, Prudic J.

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39.Njau S, Joshi SH, Espinoza R, Leaver AM, Vasavada M, Marquina A, et al. Neurochemical correlates of rapid treatment response to electroconvulsive therapy in patients with major depression. J Psychiatry Neurosci 2017;42:6-16.

40.Cano M, Martínez-Zalacaín I, Bernabéu-Sanz Á, Contreras-Rodríguez O, Hernández-Ribas R, Via E, et al. Brain volumetric and metabolic correlates of electroconvulsive therapy for treatment-resistant depression. A longitudinal neuroimaging study.

Transl Psychiatry 2017;7:e1023. 41.Figiel GS, Krishnan KR, Doraiswamy PM. Subcortical structural changes in ECT-induced delirium.

J Geriatr Psychiatry Neurol 1990;3:172-6. 42.Rotheneichner P, Lange S, O'Sullivan A, Marschallinger J, Zaunmair P, Geretsegger C, et al. Hippocampal neurogenesis and antidepressive therapy.

Shocking relations. Neural Plast 2014;2014:723915. 43.Singh A, Kar SK.

How electroconvulsive therapy works?. Understanding the neurobiological mechanisms. Clin Psychopharmacol Neurosci 2017;15:210-21.

44.Gbyl K, Videbech P. Electroconvulsive therapy increases brain volume in major depression. A systematic review and meta-analysis.

Acta Psychiatr Scand 2018;138:180-95. 45.Oltedal L, Narr KL, Abbott C, Anand A, Argyelan M, Bartsch H, et al. Volume of the human hippocampus and clinical response following electroconvulsive therapy.

Biol Psychiatry 2018;84:574-81. 46.Breggin PR. Brain-Disabling Treatments in Psychiatry.

Drugs, Electroshock, and the Role of the FDA. New York. Springer Pub.

Co.. 1997. 47.Posse S, Otazo R, Dager SR, Alger J.

MR spectroscopic imaging. Principles and recent advances. J Magn Reson Imaging 2013;37:1301-25.

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49.Obergriesser T, Ende G, Braus DF, Henn FA. Long-term follow-up of magnetic resonance-detectable choline signal changes in the hippocampus of patients treated with electroconvulsive therapy. J Clin Psychiatry 2003;64:775-80.

50.Bramham CR, Messaoudi E. BDNF function in adult synaptic plasticity. The synaptic consolidation hypothesis.

Prog Neurobiol 2005;76:99-125. 51.Duman RS, Monteggia LM. A neurotrophic model for stress-related mood disorders.

Biol Psychiatry 2006;59:1116-27. 52.Bocchio-Chiavetto L, Bagnardi V, Zanardini R, Molteni R, Nielsen MG, Placentino A, et al. Serum and plasma BDNF levels in major depression.

A replication study and meta-analyses. World J Biol Psychiatry 2010;11:763-73. 53.Brunoni AR, Lopes M, Fregni F.

A systematic review and meta-analysis of clinical studies on major depression and BDNF levels. Implications for the role of neuroplasticity in depression. Int J Neuropsychopharmacol 2008;11:1169-80.

54.Rocha RB, Dondossola ER, Grande AJ, Colonetti T, Ceretta LB, Passos IC, et al. Increased BDNF levels after electroconvulsive therapy in patients with major depressive disorder. A meta-analysis study.

J Psychiatr Res 2016;83:47-53. 55.UK ECT Review Group. Efficacy and safety of electroconvulsive therapy in depressive disorders.

A systematic review and meta-analysis. Lancet 2003;361:799-808. 56.57.Semkovska M, McLoughlin DM.

Objective cognitive performance associated with electroconvulsive therapy for depression. A systematic review and meta-analysis. Biol Psychiatry 2010;68:568-77.

58.Tulving E, Madigan SA. Memory and verbal learning. Annu Rev Psychol 1970;21:437-84.

59.Rose D, Fleischmann P, Wykes T, Leese M, Bindman J. Patients' perspectives on electroconvulsive therapy. Systematic review.

BMJ 2003;326:1363. 60.Semkovska M, McLoughlin DM. Measuring retrograde autobiographical amnesia following electroconvulsive therapy.

Historical perspective and current issues. J ECT 2013;29:127-33. 61.Fraser LM, O'Carroll RE, Ebmeier KP.

The effect of electroconvulsive therapy on autobiographical memory. A systematic review. J ECT 2008;24:10-7.

62.Squire LR, Chace PM. Memory functions six to nine months after electroconvulsive therapy. Arch Gen Psychiatry 1975;32:1557-64.

63.Squire LR, Slater PC. Electroconvulsive therapy and complaints of memory dysfunction. A prospective three-year follow-up study.

Br J Psychiatry 1983;142:1-8. 64.Squire LR, Slater PC, Miller PL. Retrograde amnesia and bilateral electroconvulsive therapy.

Long-term follow-up. Arch Gen Psychiatry 1981;38:89-95. 65.Squire LR, Wetzel CD, Slater PC.

Memory complaint after electroconvulsive therapy. Assessment with a new self-rating instrument. Biol Psychiatry 1979;14:791-801.

66.Calev A, Nigal D, Shapira B, Tubi N, Chazan S, Ben-Yehuda Y, et al. Early and long-term effects of electroconvulsive therapy and depression on memory and other cognitive functions. J Nerv Ment Dis 1991;179:526-33.

67.Sackeim HA, Prudic J, Devanand DP, Nobler MS, Lisanby SH, Peyser S, et al. A prospective, randomized, double-blind comparison of bilateral and right unilateral electroconvulsive therapy at different stimulus intensities. Arch Gen Psychiatry 2000;57:425-34.

68.Abrams R. Does brief-pulse ECT cause persistent or permanent memory impairment?. J ECT 2002;18:71-3.

69.Peretti CS, Danion JM, Grangé D, Mobarek N. Bilateral ECT and autobiographical memory of subjective experiences related to melancholia. A pilot study.

J Affect Disord 1996;41:9-15. 70.Weiner RD, Rogers HJ, Davidson JR, Squire LR. Effects of stimulus parameters on cognitive side effects.

Ann N Y Acad Sci 1986;462:315-25. 71.Prudic J, Peyser S, Sackeim HA. Subjective memory complaints.

A review of patient self-assessment of memory after electroconvulsive therapy. J ECT 2000;16:121-32. 72.Sackeim HA, Prudic J, Devanand DP, Kiersky JE, Fitzsimons L, Moody BJ, et al.

Effects of stimulus intensity and electrode placement on the efficacy and cognitive effects of electroconvulsive therapy. N Engl J Med 1993;328:839-46. 73.Frith CD, Stevens M, Johnstone EC, Deakin JF, Lawler P, Crow TJ.

Effects of ECT and depression on various aspects of memory. Br J Psychiatry 1983;142:610-7. 74.Ng C, Schweitzer I, Alexopoulos P, Celi E, Wong L, Tuckwell V, et al.

Efficacy and cognitive effects of right unilateral electroconvulsive therapy. J ECT 2000;16:370-9. 75.Coleman EA, Sackeim HA, Prudic J, Devanand DP, McElhiney MC, Moody BJ.

Subjective memory complaints prior to and following electroconvulsive therapy. Biol Psychiatry 1996;39:346-56. 76.Berggren Š, Gustafson L, Höglund P, Johanson A.

A long-term longitudinal follow-up of depressed patients treated with ECT with special focus on development of dementia. J Affect Disord 2016;200:15-24. 77.Brodaty H, Hickie I, Mason C, Prenter L.

A prospective follow-up study of ECT outcome in older depressed patients. J Affect Disord 2000;60:101-11. 78.Osler M, Rozing MP, Christensen GT, Andersen PK, Jørgensen MB.

Electroconvulsive therapy and risk of dementia in patients with affective disorders. A cohort study. Lancet Psychiatry 2018;5:348-56.

Correspondence Address:Dr. Shubh Mohan SinghDepartment of Psychiatry, Postgraduate Institute of Medical Education and Research, Chandigarh IndiaSource of Support. None, Conflict of Interest.

NoneDOI. 10.4103/psychiatry.IndianJPsychiatry_239_19 Tables [Table 1], [Table 2].

What side effects may I notice from Levitra?

Side effects that you should report to your prescriber or health care professional as soon as possible.

Side effects that usually do not require medical attention (report to your prescriber or health care professional if they continue or are bothersome):

This list may not describe all possible side effects.

20mg levitra effects side effects

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On this page BackgroundIn the summer of 2018, several medications containing the 20mg levitra effects side effects active ingredient Valsartan were cialis levitra and viagra recalled in Canada and elsewhere in the world. This was because the nitrosamine impurity, N-nitrosodimethylamine (NDMA), was found in the active pharmaceutical ingredient (API). APIs are the substances in pharmaceutical medications that are responsible for the beneficial health effects experienced by patients or consumers. Since then, some other medications made by different manufacturers have been found 20mg levitra effects side effects to contain NDMA or other similar nitrosamine impurities, such as.

N-nitrosodiethylamine (NDEA) N-nitrosodiisopropylamine (NDIPA) N-nitrosomethyl-n-butylamine (NMBA)About nitrosamine impuritiesBased primarily on animal studies, nitrosamine impurities are probable human carcinogens. This means that long-term exposure to a level above what is considered safe may increase the risk of cancer. There is no immediate health risk associated with the use of medications 20mg levitra effects side effects containing low levels of a nitrosamine impurity. Foods such as meats, dairy products and vegetables as well as drinking water may also contain low levels of nitrosamines.

We don’t expect that a nitrosamine impurity will cause harm when exposure is at or below the acceptable level. For example, no increase in the risk of cancer is expected if exposure 20mg levitra effects side effects to the nitrosamine impurity below the acceptable level occurs every day for 70 years. The actual health risk varies from person to person. The risk depends on several factors, such as.

The daily dose of the medication how 20mg levitra effects side effects long the medication is taken the level of the nitrosamine impurity in the finished productPatients should always talk to their health care provider before stopping a prescribed medication. Not treating a condition may pose a greater health risk than the potential exposure to a nitrosamine impurity. What we're doing Health Canada recognizes that the nitrosamine impurity issue may cause concern for Canadians. Your health and safety is our top priority and we will continue to take action 20mg levitra effects side effects to address risks and inform you of new safety information.

We have created a list of all medications currently known to contain nitrosamine impurities. We will continue to update it, as needed, as more information becomes available. As we continue to hold companies accountable for determining the root causes, we’re learning more about how nitrosamine impurities may have formed or be present in 20mg levitra effects side effects medications. In the meantime, we will continue to take action to address and prevent the presence of unacceptable levels of these impurities.

These actions may include. Assess the manufacturing processes of companies determine the risk to Canadians and the impact on the Canadian market test samples of drug products on the market or soon to be released to the market for NDMA and other nitrosamine impurities ask companies to stop distribution as an interim precautionary measure while we gather more information 20mg levitra effects side effects make information available to health care professionals and to patients to enable informed decisions regarding the medications that we takeAs the federal regulator of health products in Canada, we also. Request, confirm and monitor the effectiveness of recalls by companies as necessary conduct our own laboratory tests, where necessary, and assess if the results present a health risk to humans conduct inspections of domestic and foreign sites and restrict certain products from being on the market when problems are identifiedWe share information on potential root causes of nitrosamines identified to date in medications with Canadian drug companies. We also ask the companies to.

Review their manufacturing processes and controls take action to avoid nitrosamine impurities in all medications, as necessary test any products that could potentially contain nitrosamine impurities report their findings to 20mg levitra effects side effects Health Canada To better understand this global issue, we are collaborating and sharing information with international regulators, such as. U.S. Food and Drug Administration European Medicines Agency Australia’s Therapeutic Goods Administration Japan’s Ministry of Health, Labour and Welfare and Pharmaceuticals and Medical Devices Agency Switzerland’s Swissmedic Singapore’s Health Sciences AuthorityWe continue to work with companies and our international regulatory partners to. Determine the root causes of the issue verify that appropriate actions are taken to minimize or avoid the presence of nitrosamine impurities We regularly communicate information on health risks, test 20mg levitra effects side effects results, recalls and other actions taken.

Some of these key actions and communications include. Letter to all manufacturers (October 2, 2019). Health Canada issued a key communication to all companies marketing human prescription and non-prescription medications requesting them to conduct detailed evaluations of 20mg levitra effects side effects their manufacturing procedures and controls for the potential presence of nitrosamines. The letter outlined examples of potential root causes for the presence of nitrosamines and included a request for a stepwise approach to conduct these risk assessments and expectations for any necessary subsequent actions.

Nitrosamines Questions and Answers (Q&A) document (November 26, 2019). Health Canada issued a Q&A document on issues relating 20mg levitra effects side effects to the control of nitrosamines in medicines. This Q&A document will be updated periodically as new information becomes available. Webinar on Nitrosamines (January 31, 2020).

The purpose of this session was to provide an 20mg levitra effects side effects opportunity for a discussion of this issue with Health Canada and stakeholders. Health Canada provided overviews of the situation relating to nitrosamine impurities in pharmaceuticals and stakeholders had the opportunity to share their experiences, successes and challenges in addressing the issue of nitrosamine contamination. The on-line webinar was well intended by approximately 500 participants from over 18 countries and provided valuable information to respond to this global issue.We will continue to update Canadians if a product is being recalled. Related linksOn this page Overview One of Health Canada’s roles is to regulate and authorize health products that improve and maintain the health and 20mg levitra effects side effects well-being of Canadians.

The erectile dysfunction treatment levitra has created an unprecedented demand on Canada’s health care system and has led to an urgent need for access to health products. As part of the government's broad read this response to the levitra, Health Canada introduced innovative and agile regulatory measures. These measures expedite the regulatory review of erectile dysfunction treatment health products without compromising safety, efficacy and quality standards. These measures are helping to make health products and medical supplies 20mg levitra effects side effects needed for erectile dysfunction treatment available to Canadians and health care workers.

Products include. testing devices, such as test kits and swabs personal protective equipment (PPE) for medical purposes, such as medical masks, N95 respirators, gowns and gloves disinfectants and hand sanitizers investigational drugs and treatments We support the safe and timely access to these critical products through. temporary legislative, regulatory and policy 20mg levitra effects side effects measures partnerships and networks with companies, provinces and territories, other government departments, international regulatory bodies and health care professionals easily accessed and available guidance and other priority information We have also taken immediate steps to protect consumers from unauthorized health products and illegal, false or misleading product advertisements that claim to mitigate, prevent, treat, diagnose or cure erectile dysfunction treatment. Medical devices Medical devices play an important role in diagnosing, treating, mitigating or preventing erectile dysfunction treatment.

We are expediting access to medical devices through an interim order for importing and selling medical devices. This interim order, which 20mg levitra effects side effects was introduced on March 18, 2020, covers medical devices such as. Since the release of the interim order, we have authorized hundreds of medical devices for use against erectile dysfunction treatment. We have also expedited the review and issuance of thousands of Medical Device Establishment Licences (MDELs).

These have been issued for companies asking to manufacture (Class 20mg levitra effects side effects I), import or distribute medical devices in relation to erectile dysfunction treatment. Testing devices Early diagnosis is critical to slowing and reducing the spread of erectile dysfunction treatment in Canada. Our initial focus during the levitra has been the scientific review and authorization of testing devices. We made it a priority 20mg levitra effects side effects to review diagnostic tests using nucleic acid technology.

This helped to increase the number of testing devices available in Canada to diagnose active and early-stage s of erectile dysfunction treatment. We are also reviewing and authorizing serological tests that detect previous exposure to erectile dysfunction treatment. In May 2020, we authorized the first serological testing device to help improve 20mg levitra effects side effects our understanding of the immune status of people infected. We also provided guidance on serological tests.

We continue to collaborate with the Public Health Agency of Canada’s National Microbiology Laboratory (NML) and with provincial public health and laboratory partners as they. review and engage in their own studies of serological technologies develop tests assess commercial tests The NML is known around the world for 20mg levitra effects side effects its scientific evidence. It works with public health partners to prevent the spread of infectious diseases. When making regulatory decisions, we consider the data provided by the NML and provincial public health and laboratory partners.

This work will facilitate access to devices that will improve our testing capacity 20mg levitra effects side effects. It will also support research into understanding immunity against erectile dysfunction treatment and the possibility of re-. Personal protective equipment Personal protective equipment (PPE) is key to protecting health care workers, patients and Canadians through prevention and control. We play an important role in providing guidance to companies 20mg levitra effects side effects and manufacturers in Canada that want to supply PPE.

We are increasing the range of products available without compromising safety and effectiveness. For example, we are. We have authorized hundreds of new PPE products and other 20mg levitra effects side effects devices, all while ensuring the safety and quality of PPE. Hand sanitizers, disinfectants, cleaners and soaps The erectile dysfunction treatment levitra created an urgent need for disinfectants, hand sanitizers, cleaners and soaps.

To increase supply and ensure Canadians have access to these products, we. We will continue our efforts to support supply and access to these essential 20mg levitra effects side effects products. Drugs and treatments We are closely tracking all potential drugs and treatments in development in Canada and abroad. We are working with companies, academic research centres and investigators to help expedite the development and availability of drugs and treatments to prevent and treat erectile dysfunction treatment.

Clinical trials On May 23, 2020, the Minister of Health signed a clinical trials interim order 20mg levitra effects side effects. This temporary measure is designed to meet the urgent need to diagnose, treat, reduce or prevent erectile dysfunction treatment. The interim order facilitates clinical trials in Canada to investigate and offer greater patient access to potential erectile dysfunction treatment drugs and medical devices, while upholding strong patient safety requirements. As well, to encourage 20mg levitra effects side effects the rapid development of drugs and treatments, we are.

prioritizing erectile dysfunction treatment clinical trial applications providing regulatory agility and guidance on how clinical trials are to be conducted this encourages and supports the launch of new trials and the continuation of existing ones, as well as broader patient participation across the country working with companies outside of Canada to bring clinical trials to our country working with researchers around the world to add Canadian sites to their research efforts On May 15, 2020, we authorized Canada’s first treatment clinical trial. Addressing critical product shortages We have taken steps to address critical product shortages caused by the erectile dysfunction treatment levitra. One of these steps was an interim order to prevent or ease shortages of drugs, medical devices and foods for a special dietary purpose.

The daily prices of levitra dose of the medication how long the medication is taken the level of the nitrosamine impurity in the finished productPatients should always talk to their health care provider before stopping a prescribed medication. Not treating a condition may pose a greater health risk than the potential exposure to a nitrosamine impurity. What we're doing Health Canada recognizes that the nitrosamine impurity issue may cause concern for Canadians. Your health prices of levitra and safety is our top priority and we will continue to take action to address risks and inform you of new safety information.

We have created a list of all medications currently known to contain nitrosamine impurities. We will continue to update it, as needed, as more information becomes available. As we continue to hold companies accountable for determining the root causes, we’re learning more about how nitrosamine impurities may have formed or be present prices of levitra in medications. In the meantime, we will continue to take action to address and prevent the presence of unacceptable levels of these impurities.

These actions may include. Assess the manufacturing processes of companies determine the risk to Canadians and the impact on the Canadian market test samples of drug products on the market or soon to be released to the market for NDMA and other nitrosamine impurities ask companies to stop distribution as an interim precautionary measure while we gather more information make information available to health care professionals and to patients to enable informed decisions regarding the medications that we takeAs the federal regulator prices of levitra of health products in Canada, we also. Request, confirm and monitor the effectiveness of recalls by companies as necessary conduct our own laboratory tests, where necessary, and assess if the results present a health risk to humans conduct inspections of domestic and foreign sites and restrict certain products from being on the market when problems are identifiedWe share information on potential root causes of nitrosamines identified to date in medications with Canadian drug companies. We also ask the companies to.

Review their manufacturing processes and controls take action to avoid nitrosamine impurities in all medications, as necessary test any products that could potentially contain nitrosamine impurities report their findings to Health Canada To better understand this global issue, we are collaborating and sharing information with prices of levitra international regulators, such as. U.S. Food and Drug Administration European Medicines Agency Australia’s Therapeutic Goods Administration Japan’s Ministry of Health, Labour and Welfare and Pharmaceuticals and Medical Devices Agency Switzerland’s Swissmedic Singapore’s Health Sciences AuthorityWe continue to work with companies and our international regulatory partners to. Determine the root causes of the issue verify that prices of levitra appropriate actions are taken to minimize or avoid the presence of nitrosamine impurities We regularly communicate information on health risks, test results, recalls and other actions taken.

Some of these key actions and communications include. Letter to all manufacturers (October 2, 2019). Health Canada issued a key communication to all companies marketing human prescription and non-prescription medications requesting them to conduct detailed evaluations of their manufacturing procedures and prices of levitra controls for the potential presence of nitrosamines. The letter outlined examples of potential root causes for the presence of nitrosamines and included a request for a stepwise approach to conduct these risk assessments and expectations for any necessary subsequent actions.

Nitrosamines Questions and Answers (Q&A) document (November 26, 2019). Health Canada issued a prices of levitra Q&A document on issues relating to the control of nitrosamines in medicines. This Q&A document will be updated periodically as new information becomes available. Webinar on Nitrosamines (January 31, 2020).

The purpose of this session was to provide an opportunity for a discussion of this issue with Health prices of levitra Canada and stakeholders. Health Canada provided overviews of the situation relating to nitrosamine impurities in pharmaceuticals and stakeholders had the opportunity to share their experiences, successes and challenges in addressing the issue of nitrosamine contamination. The on-line webinar was well intended by approximately 500 participants from over 18 countries and provided valuable information to respond to this global issue.We will continue to update Canadians if a product is being recalled. Related linksOn this page Overview One of Health prices of levitra Canada’s roles is to regulate and authorize health products that improve and maintain the health and well-being of Canadians.

The erectile dysfunction treatment levitra has created an unprecedented demand on Canada’s health care system and has led to an urgent need for access to health products. As part of the government's broad response to the levitra, Health Canada introduced innovative and agile regulatory measures. These measures expedite the regulatory review of erectile dysfunction treatment health prices of levitra products without compromising safety, efficacy and quality standards. These measures are helping to make health products and medical supplies needed for erectile dysfunction treatment available to Canadians and health care workers.

Products include. testing devices, such as test kits and swabs personal protective equipment (PPE) for medical purposes, such as medical masks, N95 respirators, gowns and gloves disinfectants and hand sanitizers investigational drugs and treatments We support the safe and timely access to prices of levitra these critical products through. temporary legislative, regulatory and policy measures partnerships and networks with companies, provinces and territories, other government departments, international regulatory bodies and health care professionals easily accessed and available guidance and other priority information We have also taken immediate steps to protect consumers from unauthorized health products and illegal, false or misleading product advertisements that claim to mitigate, prevent, treat, diagnose or cure erectile dysfunction treatment. Medical devices Medical devices play an important role in diagnosing, treating, mitigating or preventing erectile dysfunction treatment.

We are prices of levitra expediting access to medical devices through an interim order for importing and selling medical devices. This interim order, which was introduced on March 18, 2020, covers medical devices such as. Since the release of the interim order, we have authorized hundreds of medical devices for use against erectile dysfunction treatment. We have also expedited the review and issuance of thousands of Medical Device Establishment prices of levitra Licences (MDELs).

These have been issued for companies asking to manufacture (Class I), import or distribute medical devices in relation to erectile dysfunction treatment. Testing devices Early diagnosis is critical to slowing and reducing the spread of erectile dysfunction treatment in Canada. Our initial focus during the levitra has been the scientific review and authorization of testing devices. We prices of levitra made it a priority to review diagnostic tests using nucleic acid technology.

This helped to increase the number of testing devices available in Canada to diagnose active and early-stage s of erectile dysfunction treatment. We are also reviewing and authorizing serological tests that detect previous exposure to erectile dysfunction treatment. In May 2020, we authorized the first serological prices of levitra testing device to help improve our understanding of the immune status of people infected. We also provided guidance on serological tests.

We continue to collaborate with the Public Health Agency of Canada’s National Microbiology Laboratory (NML) and with provincial public health and laboratory partners as they. review and engage in their own studies of serological technologies prices of levitra develop tests assess commercial tests The NML is known around the world for its scientific evidence. It works with public health partners to prevent the spread of infectious diseases. When making regulatory decisions, we consider the data provided by the NML and provincial public health and laboratory partners.

This work will facilitate access to devices that will improve our prices of levitra testing capacity. It will also support research into understanding immunity against erectile dysfunction treatment and the possibility of re-. Personal protective equipment Personal protective equipment (PPE) is key to protecting health care workers, patients and Canadians through prevention and control. We play an prices of levitra important role in providing guidance to companies and manufacturers in Canada that want to supply PPE.

We are increasing the range of products available without compromising safety and effectiveness. For example, we are. We have authorized hundreds of new PPE products and other devices, all prices of levitra while ensuring the safety and quality of PPE. Hand sanitizers, disinfectants, cleaners and soaps The erectile dysfunction treatment levitra created an urgent need for disinfectants, hand sanitizers, cleaners and soaps.

To increase supply and ensure Canadians have access to these products, we. We will continue our efforts to support supply prices of levitra and access to these essential products. Drugs and treatments We are closely tracking all potential drugs and treatments in development in Canada and abroad. We are working with companies, academic research centres and investigators to help expedite the development and availability of drugs and treatments to prevent and treat erectile dysfunction treatment.

Clinical trials On May 23, 2020, the Minister of Health signed a clinical trials prices of levitra interim order. This temporary measure is designed to meet the urgent need to diagnose, treat, reduce or prevent erectile dysfunction treatment. The interim order facilitates clinical trials in Canada to investigate and offer greater patient access to potential erectile dysfunction treatment drugs and medical devices, while upholding strong patient safety requirements. As well, to encourage the prices of levitra rapid development of drugs and treatments, we are.

prioritizing erectile dysfunction treatment clinical trial applications providing regulatory agility and guidance on how clinical trials are to be conducted this encourages and supports the launch of new trials and the continuation of existing ones, as well as broader patient participation across the country working with companies outside of Canada to bring clinical trials to our country working with researchers around the world to add Canadian sites to their research efforts On May 15, 2020, we authorized Canada’s first treatment clinical trial. Addressing critical product shortages We have taken steps to address critical product shortages caused by the erectile dysfunction treatment levitra. One of these steps was an interim order to prevent or ease shortages of prices of levitra drugs, medical devices and foods for a special dietary purpose. Introduced on March 30, 2020, this interim order temporarily.

allows companies with an MDEL to import foreign devices that meet similar high quality and manufacturing standards as Canadian-approved devices makes it mandatory to report shortages of medical devices that are considered critical during the levitra allows companies with Drug Establishment Licences to import foreign drugs that meet similar high quality and manufacturing standards as Canadian-approved drugs We also work with provinces and territories, companies and manufacturers, health care providers and patient groups to strengthen the drug supply chain. To identify, prices of levitra prevent and ease shortages for Canadians, we. stepped up monitoring and surveillance activities to identify potential shortages early on have introduced temporary regulatory agility so manufacturers can ramp up production for example, increased the batch sizes regularly engaged stakeholders to share information and look at how we can prevent tier 3 drug shortages, which have the greatest impact on Canada’s drug supply and health care system helped to access extra supplies of. Drugs, including muscle relaxants, inhalers and sedatives medical devices, such as PPE (medical masks and gowns) and ventilators Post-market surveillance activities We actively monitor the post-market safety and effectiveness of health products related to erectile dysfunction treatment.

For example, we work with industry members and prices of levitra health care workers to. monitor safety issues take the necessary steps to protect Canadians from the effects of harmful products To ensure the ongoing safety of marketed health products, we. take proactive steps to identify erectile dysfunction treatment-related adverse events from drugs and medical devices being used in Canada for erectile dysfunction treatment proactively monitor major online retailers to identify authorized/unauthorized products making false and misleading erectile dysfunction treatment claims manage risk communications for erectile dysfunction treatment public advisories, information updates, health care professional communications and shortages take a proactive approach to identifying false and misleading ads for health products related to erectile dysfunction treatment take part in international discussions on the real-world safety and effectiveness of erectile dysfunction treatments Engaging with partners and stakeholders To support access to health products for erectile dysfunction treatment, we collaborate with a range of organizations and stakeholders. These include other government departments, including the Public Health Agency of Canada, as well as provinces and prices of levitra territories, international partners, companies and health care professionals.

Engaging with stakeholders We take a whole-of-government approach to address stakeholder issues by. collaborating with other government departments to ease challenges across the entire supply chain connecting companies with government decision makers who play important roles in delivering health products to Canadians These efforts create opportunities for new companies and researchers interested in helping in the fight against erectile dysfunction treatment. For example, we have worked with other departments to help new companies supply PPE to Canadians and health care workers.

Levitra drug class

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About This TrackerThis tracker provides the number of levitra drug class confirmed cases and deaths from novel erectile dysfunction by country, the trend herbal alternative to levitra in confirmed case and death counts by country, and a global map showing which countries have confirmed cases and deaths. The data are drawn from the Johns Hopkins University (JHU) erectile dysfunction Resource Center’s erectile dysfunction treatment Map and the World Health Organization’s (WHO) levitra drug class erectile dysfunction Disease (erectile dysfunction treatment-2019) situation reports.This tracker will be updated regularly, as new data are released.Related Content. About erectile dysfunction treatment erectile dysfunctionIn late 2019, a new erectile dysfunction emerged in central China to cause disease in humans. Cases of this disease, levitra drug class known as erectile dysfunction treatment, have since been reported across around the globe.

On January 30, 2020, the World Health Organization (WHO) declared the levitra represents a public health emergency of international concern, and on January 31, 2020, the U.S. Department of Health and Human Services declared it to be a health emergency for the United States.With schools nationwide preparing for fall and the federal government encouraging in-person classes, key concerns for school officials, teachers and parents include the risks that erectile dysfunction poses to children and their role in transmission of the disease.A new KFF brief examines the latest available data and evidence about the issues around erectile dysfunction treatment and children and what they suggest about the risks levitra drug class posed for reopening classrooms. The review concludes that while children levitra 2.5 mg effectiveness are much less likely levitra drug class than adults to become severely ill, they can transmit the levitra. Key findings include:Disease severity is significantly less in children, though rarely some do get very sick.

Children under age 18 account for 22% of the population but account for just levitra drug class 7% of the more than 4 million erectile dysfunction treatment cases and less than 1% of deaths.The evidence is mixed about whether children are less likely than adults to become infected when exposed. While one prominent study estimates children and teenagers are half as likely as adults over age 20 to catch the levitra, other studies find children and adults are about equally likely to have antibodies that develop after a erectile dysfunction treatment .While children do transmit to others, more evidence is needed on the frequency and extent of that transmission. A number of studies find children are less likely than adults to be the source of s in households and other settings, though this could occur because of differences in testing, the severity of the disease, and the impact of earlier school closures.Most countries that have reopened levitra drug class schools have not experienced outbreaks, but almost all had significantly lower rates of community transmission. Some countries, including Canada, Chile, France, and Israel did experience school-based outbreaks, sometimes significant ones, that required schools to close a second time.The analysis concludes that there is a risk of spread associated with reopening schools, particularly in states and communities where there is already widespread community transmission, that should be weighed carefully against the benefits of in-person education..

About This TrackerThis tracker provides the prices of levitra number of confirmed cases and deaths from novel erectile dysfunction by country, the trend in confirmed case and death counts by country, and a global map showing which countries have confirmed cases and deaths. The data are drawn from the Johns Hopkins University (JHU) prices of levitra erectile dysfunction Resource Center’s erectile dysfunction treatment Map and the World Health Organization’s (WHO) erectile dysfunction Disease (erectile dysfunction treatment-2019) situation reports.This tracker will be updated regularly, as new data are released.Related Content. About erectile dysfunction treatment erectile dysfunctionIn late 2019, a new erectile dysfunction emerged in central China to cause disease in humans.

Cases of this disease, known as erectile dysfunction treatment, have since been prices of levitra reported across around the globe. On January 30, 2020, the World Health Organization (WHO) declared the levitra represents a public health emergency of international concern, and on January 31, 2020, the U.S. Department of Health and Human Services declared it to be a health emergency for the United States.With schools nationwide preparing for fall and the federal government encouraging in-person classes, key concerns for school officials, teachers and parents include the risks that erectile dysfunction poses to children and their role in transmission of the disease.A new KFF brief examines the latest available data and evidence about prices of levitra the issues around erectile dysfunction treatment and children and what they suggest about the risks posed for reopening classrooms.

The review concludes that while children are much less likely than adults to become severely ill, they can prices of levitra transmit the levitra. Key findings include:Disease severity is significantly less in children, though rarely some do get very sick. Children under age 18 account for 22% of the population but account for just 7% of the more than 4 million erectile dysfunction treatment cases and less than 1% of deaths.The evidence is mixed about whether children are less likely than adults to become prices of levitra infected when exposed.

While one prominent study estimates children and teenagers are half as likely as adults over age 20 to catch the levitra, other studies find children and adults are about equally likely to have antibodies that develop after a erectile dysfunction treatment .While children do transmit to others, more evidence is needed on the frequency and extent of that transmission. A number of studies find children are less likely than adults to be the source of s in households and other settings, though this could prices of levitra occur because of differences in testing, the severity of the disease, and the impact of earlier school closures.Most countries that have reopened schools have not experienced outbreaks, but almost all had significantly lower rates of community transmission. Some countries, including Canada, Chile, France, and Israel did experience school-based outbreaks, sometimes significant ones, that required schools to close a second time.The analysis concludes that there is a risk of spread associated with reopening schools, particularly in states and communities where there is already widespread community transmission, that should be weighed carefully against the benefits of in-person education..