Electroconvulsive Therapy (ECT): Benefits, Usage, Procedure, Side Effects and Efficacy

Electroconvulsive therapy (ECT) involves using electrical stimulation to trigger a brief brain seizure, often applied when other treatments for severe mental health conditions have been ineffective. As mentioned by the Royal College of Psychiatrists (2023) in the “ECTAS Dataset Report,” 68% of patients who underwent acute ECT showed “much improved” or “very much improved” outcomes. Additionally, 41% of those treated for depression achieved full remission.

The benefits of ECT include rapid symptom relief, high effectiveness in treating major depression, success in treating bipolar disorder and treatment-resistant schizophrenia, improvement in catatonia, reduction in suicidal thoughts, and remission of severe mental health symptoms in many patients. As mentioned by Husain, Mustafa, et al. (2004) in the study “Speed of response and remission in major depressive disorder with acute electroconvulsive therapy (ECT): a Consortium for Research in ECT (CORE) report,” a large, multisite collaborative study showed that, among 217 patients, 86% completed an acute treatment course with three-times-a-week BL ECT, 79% showed sustained improvement, and 75% remitted.

The procedure involves a patient receiving muscle relaxants and anesthesia before small electrical currents are passed through the brain. As indicated by the Medical University of South Carolina, sessions are conducted two to three times a week, and for maximum benefit, 6-12 treatments are required.

Side effects of ECT are memory loss, confusion, and muscle soreness, though these are temporary. Despite these risks, ECT remains a well-supported, evidence-based option for serious mental health conditions. According to the Scottish Electroconvulsive Therapy (ECT) Audit Network (SEAN) in a study published by the European Psychiatric Association (2024), side effects of ECT were generally rare. Anesthetic complications and prolonged seizures occurred in less than 1% of cases, while cardiovascular complications were reported in 2.2%. Nausea and muscle aches affected 7.2% and 12% of patients, respectively. Confusion was noted in 19%, and cognitive side effects were observed in 26.2%.

ECT is effective for 80–85% of patients, and most patients remain well for months after treatment. According to the American Psychiatric Association (2023), clinical evidence shows that electroconvulsive therapy (ECT) leads to major betterment in about 80% of patients with severe but uncomplicated major depression.

What Is Electroconvulsive Therapy (ECT) and How Does It Work?

Electroconvulsive Therapy (ECT) is a non-invasive psychiatric treatment that involves passing small electrical currents through the brain to trigger a brief, controlled seizure. First introduced by Italian neurologist Ugo Cerletti in 1938, ECT’s core mechanism is thought to reset brain chemistry, ameliorating mood and cognition by altering neurotransmitter activity. This therapy is beneficial for conditions like severe depression and bipolar disorder, where other treatments fail.

During ECT, the electrical stimulation affects the brain’s limbic system, which regulates emotions. This results in changes in how the brain processes emotional and cognitive information, providing relief for individuals suffering from mood disorders. While the exact way ECT works is still not fully understood, its success in minimizing symptoms is well-documented.

In the research paper “Magnetic Seizure Therapy and Electroconvulsive Therapy Increase Aperiodic Activit,” by Smith, Sydney et al. 2023, researchers from the University of California San Diego investigated the mechanism behind electroconvulsive therapy (ECT) and found that it alleviates depression by increasing aperiodic brain activity, which helps regulate neuronal function. Using EEG scans on patients receiving ECT, the study demonstrated that this therapy boosts inhibitory brain activity, aiding in symptom relief. The findings, published in Translational Psychiatry, illustrate that aperiodic activity is useful as a measure of treatment effectiveness, potentially improving clinical applications of ECT.

How Common Is Electroconvulsive Therapy?

Electroconvulsive therapy is not common. As indicated by Mental Health America, approximately 100,000 individuals in the United States undergo Electroconvulsive Therapy (ECT) annually. The application of ECT varies across countries, hospitals, and individual psychiatrists. A survey conducted in the late 1980s, as reported by Hermann R., et al. in the 1995 research article “Variation in ECT Use in the United States,” found that the estimated number of ECT recipients each year was around 100,000, with substantial differences noted among metropolitan statistical areas.

What Are the Benefits of Electroconvulsive Therapy?

The benefits of Electroconvulsive Therapy (ECT) include rapid symptom relief, high success rate, effectiveness for treatment-resistant conditions, full remission rates, minimal long-term side effects, shorter hospital stays, and improved quality of life. ECT is particularly valuable for individuals with severe depression, bipolar disorder, or schizophrenia who do not respond to traditional treatments, offering a swift and effective alternative that precipitates massive advancements in mental health and overall well-being. The common benefits of ECT are explained below:

• Rapid Relief of Symptoms: ECT provides quick alleviation of severe depression and suicidal thoughts, particularly in cases where other treatments have failed.
• High Success Rate: Research by the American Psychiatric Association shows that approximately 80% of patients with severe major depression experience substantial improvement after ECT.
• Effective for Treatment-Resistant Conditions: ECT is particularly beneficial for individuals with major depressive disorder, bipolar disorder, and certain psychotic disorders that do not respond to medications or psychotherapy. As noted by Subramanian et al. 2022 in the research paper “Electroconvulsive Therapy in Treatment-Resistant Depression,” ECT is a highly effective and safe neuromodulation treatment for depression, offering distinct advantages over pharmacotherapy. These benefits include a rapid improvement in depressive symptoms, which are observed as early as after the third treatment, and high remission rates of approximately 50–63% in patients with pharmacoresistant depression.
• Potential for Full Remission: The “ECTAS Dataset Report,”  by the Royal College of Psychiatrists (2023)indicates that 41% of patients treated for depression achieve full remission after ECT.
• Minimal Long-term Side Effects: While some temporary cognitive side effects occur, serious complications are rare, making ECT a safe option for many patients. For example, the European Psychiatric Association (2024) provides that cardiovascular complications were reported in 2.2%. Nausea and muscle aches affected 7.2% and 12% of patients.
• Shorter Hospital Stays: ECT reduces the duration of hospitalization needed for severe mental health crises, allowing for a quicker return to daily activities. In the research paper “Use of ECT for the Inpatient Treatment of Recurrent Major Depression,” Olfson et al. 1998 discovered that 9.4% of hospitalized adults with recurrent major depression received ECT, with 59.2% starting within the first five days. Prompt ECT shortened hospital stays and lessened costs, though economically disadvantaged patients were less likely to receive it.
• Improvement in Quality of Life: Patients report enhancements in their overall quality of life and functioning post-treatment. A study “Long-Term Quality of Life in Treatment-Resistant Depression After Electroconvulsive Therapy” by Lex et al. (2021) revealed that 40–50% of individuals experienced clinically meaningful improvements in their long-term quality of life (QoL). Higher QoL was associated with factors such as being married, having no disability status, presenting with psychotic features at baseline, and experiencing shorter depressive episodes initially.

What Is Electroconvulsive Therapy Used For?

Electroconvulsive therapy (ECT) is used for severe mental health conditions that have not responded to other treatments. ECT primarily treats major depressive disorder, bipolar disorder, schizophrenia, and catatonia. ECT benefits patients with severe, treatment-resistant depression the most, especially those at high risk of suicide or with severe functional impairment. 

How Does ECT Work for Depression?

ECT works for depression by decreasing striatal dopamine transporter binding in patients with grave depression, specifically in cases where other treatments, such as medications or psychotherapy, have failed. Clinical evidence by Subramanian et al. 2022 in the research paper “Electroconvulsive Therapy in Treatment-Resistant Depression demonstrates that ECT precipitates a fall in depressive symptoms, with remission rates ranging from 50% to 63% among individuals with treatment-resistant depression.

Can ECT Be Effective for OCD and Anxiety?

Yes, electroconvulsive therapy (ECT) can be effective for treating severe obsessive-compulsive disorder (OCD) and depression, especially when other treatments have failed. A systematic review of 265 cases “Electroconvulsive therapy for obsessive-compulsive disorder: a systematic review” by Fontenelle, Leonardo, et al. 2015 found that 60.4% of patients exhibited a positive response to ECT.

Can Electroconvulsive Therapy Help Alzheimer’s?

Yes, ECT helps with some symptoms of Alzheimer’s disease, such as agitation and aggression, but there are also concerns about its use. Forester, et al. 2020 in the systematic review “Evidence for electroconvulsive therapy (ECT) in the treatment of intractable behavioral symptoms of dementia (BPSD): A systematic review,” state that nearly 97% of the 181 patients with behavioral symptoms of dementia treated with ECT across 17 studies showed a drop or resolution of Behavioral and Psychological Symptoms of Dementia (BPSD) with minimal and/or transient side effects.

When Should Electroconvulsive Therapy Be Used?

ECT should be used when other treatments have failed as a necessary rapid response due to severe symptoms or high suicide risk, when patients have a history of positive response to ECT, or when medical conditions or medication interactions prevent the use of standard therapies. Hall S. 2014 in the chapter “Brain Stimulation Therapy in Psychiatry” from the Encyclopedia of the Neurological Sciences (Second Edition), a substantial body of literature supports the acute efficacy of electroconvulsive therapy (ECT) for major depressive disorder (MDD), with remission rates varying between 80% in non-refractory patients and 50% in refractory cases, happening within four weeks. 

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When Should ECT Not Be Used?

ECT should not be used in patients with increased intracranial pressure, recent heart attack or stroke, unstable heart conditions, severe pulmonary disease, or certain brain tumors. As discussed by Taylor S. 2007, the seizure induced by electroconvulsive therapy (ECT) is contraindicated for patients with cardiovascular, pulmonary, or central nervous system impairments. 

Who Is Not a Good Candidate for ECT?

Patients with certain cardiovascular conditions, recent stroke, or brain aneurysms do not make good candidates for ECT. Pregnant women in their first trimester need also to avoid ECT unless the benefits clearly outweigh the risks.

A study led by Read, John (2020) from the University of East London calls for the immediate suspension of electroconvulsive therapy (ECT) for depression, citing risks of brain damage and inadequate supporting research. Published in Ethical Human Psychology and Psychiatry, the study argues that ECT grants minimal long-term benefits while posing severe risks, including memory loss and brain damage. Dr. Read critiques previous studies, labeling them as the lowest quality encountered in a 40-year career. In contrast, the Royal College of Psychiatrists defends ECT, describing it as a life-saving treatment for severe cases of depression.

Why Is Electroconvulsive Therapy a Last Resort?

ECT serves as a last resort because of the stigma associated with the treatment, potential cognitive side effects, availability of other less invasive treatments, and the need for anesthesia and medical monitoring.

In a qualitative study “Last Resort Interventions?: A Qualitative Study of Psychiatrists’ Experience with and Views on Psychiatric Electroceutical Interventions” by Cabrera et al. 2021, psychiatrists’ perspectives on psychiatric electrical interventions (PEIs), such as electroconvulsive therapy (ECT) and transcranial magnetic stimulation (TMS), were examined. Interviews with 16 psychiatrists in Michigan revealed that most held generally positive views of PEIs, particularly ECT and TMS, as options after multiple failed medication trials. 33% of the psychiatrists expressed caution, citing skepticism about their effectiveness. The study also pointed to a lack of knowledge regarding surgical PEIs, like deep brain stimulation.

What Is the Procedure of Electroconvulsive Therapy?

The procedure of ECT is preparation, anesthesia, electrode placement, electrical stimulation, monitoring, post-treatment recovery, and post-treatment care. As elaborated by the American Psychiatric Association (2023), all the steps are designed to ensure the patient’s safety while optimizing treatment outcomes. The steps involved in the procedure of ECT are listed below:

• Preparation: The patient undergoes a full medical evaluation, covering physical and psychological assessments. Fasting is required before the procedure, and an intravenous (IV) line is placed for medication administration.
• Anesthesia: General anesthesia is administered to ensure the patient remains unconscious and pain-free during the procedure. A muscle relaxant is also given to minimize movement.
• Electrode Placement: Electrodes are positioned on the patient’s scalp, either bilaterally (on both sides) or unilaterally (on one side), depending on the treatment plan.
• Electrical Stimulation: A controlled electrical current is passed through the brain, inducing a brief seizure that lasts 20 to 60 seconds. This seizure is the therapeutic part of the treatment.
• Monitoring: Throughout the procedure, the patient’s vital signs, consisting of heart rate, oxygen levels, and brain activity, are closely monitored by medical professionals.
• Post-Treatment Recovery: After the procedure, the patient is taken to a recovery area, where they are monitored as they wake up from anesthesia. Mild confusion or grogginess is common during this phase.
• Post-Treatment Care: Patients are evaluated for any side effects and are able to go home the same day. A treatment plan, encompassing follow-up ECT sessions and aftercare, is developed based on the patient’s response.

How Do You Prepare for Electroconvulsive Therapy?

To prepare for ECT, patients must fast for 8-12 hours before the procedure, stop certain medications as directed by the doctor, arrange for transportation home after the treatment, and inform the medical team about any changes in health status. As written by Johns Hopkins Medicine in “Electroconvulsive Therapy:  What Patients and Families Need to Know About ECT,” patients cannot eat before electroconvulsive therapy to minimize the risk of aspiration during anesthesia.

What Happens During ECT Treatment?

During an electroconvulsive therapy (ECT) session, the patient is first administered general anesthesia and a muscle relaxant to ensure comfort and prevent injury. Electrodes are then placed on the scalp in either a bilateral or unilateral configuration, depending on the specific treatment plan. A controlled electrical stimulus is delivered through the electrodes, inducing a brief, controlled seizure lasting about 30 to 60 seconds. The seizure affects brain activity, precipitating changes in brain chemistry that aid in alleviating severe psychiatric symptoms. The patient’s vital signs are closely monitored to ensure safety throughout the procedure.

How Long Does ECT Last?

Each ECT session lasts 5-10 minutes, with patients under anesthesia for about 30 minutes total. As studied by the American Psychiatric Association (2023), a standard course of ECT includes 6-12 treatments over 2-4 weeks, but this varies based on individual patient needs and responses. 

Who Administers Electroconvulsive Therapy?

A team of healthcare professionals administers ECT, including a psychiatrist who oversees the treatment and determines the appropriate electrical dosage, an anesthesiologist who administers anesthesia and monitors vital signs, and a nurse who assists with patient care and monitoring.

Can You Refuse Electroconvulsive Therapy?

Yes, you can refuse ECT. Informed consent is required before administering ECT, except in rare emergencies where a patient is unable to provide consent and is at immediate risk of severe harm or death. 

Can ECT Be Given to You Without Your Consent?

Yes, ECT can be given to you without your consent. As enacted by the British Parliament for the UK’s National Health Service (NHS), Section 58A of the Mental Health Act grants patients the right to refuse electroconvulsive therapy (ECT), except under specific circumstances. These circumstances are, viz: lacking the capacity to make informed decisions, having an advance directive consenting to ECT, being subject to a tribunal order, or being under a psychiatric treatment order.

How Effective Is Electroconvulsive Therapy?

Electroconvulsive therapy (ECT) is effective for 80–85% of patients, with many experiencing persistent improvement for months following treatment. According to the American Psychiatric Association (2023) in the research titled “What Is Electroconvulsive Therapy (ECT)?,” clinical evidence indicates that ECT boosts the condition of approximately 80% of individuals suffering from severe but uncomplicated major depression.

What Is the Success Rate of ECT?

The success rate of ECT varies between 70-90%. The University of Utah Health reports that electroconvulsive therapy (ECT) exhibits superior efficacy compared to medications, achieving a success rate of 70–90% versus the 50–60% success rate associated with pharmacological treatments. This observation is supported by Howard Weeks, co-medical director of the Treatment Resistant Mood Disorder Clinic at the University of Utah’s Huntsman Mental Health Institute, citing that it derives faster results.

How Many Sessions Are Typically Needed to See Results?

Most patients typically require 6-12 ECT sessions to achieve optimal results. Some patients experience improvement after 3-4 sessions, while others need up to 20 sessions for full remission. Drawing from extensive research in this area, the Taskforce Report of the American Psychiatric Association (APA) on electroconvulsive therapy (ECT) recommends conducting sessions two to three times a week. APA advises caution, noting that more frequent sessions pose an elevated risk of cognitive deficits. If cognitive effects are a concern, the report urges cutting back on the frequency of sessions.

How Often Is Electroconvulsive Therapy Used?

ECT is often used 2-3 times per week. For maintenance therapy, treatments occur once every few weeks or months. The American Psychiatric Association guidelines suggest no more than 20 treatments in an acute course of ECT.

What Are the Risks and Side Effects of Electroconvulsive Therapy?

The risks and side effects of ECT are headaches, muscle aches, nausea, confusion (resolving within hours), and memory issues (usually temporary). Rare but serious complications are dental or oral trauma, prolonged seizures, and cardiovascular complications. Data from the Scottish Electroconvulsive Therapy (ECT) Audit Network (SEAN), published by the European Psychiatric Association in 2024, revealed that anesthetic complications and prolonged seizures occurred in less than 1% of treatment episodes. Cardiovascular complications were reported at a rate of 2.2%. Additionally, nausea affected 7.2% of patients, while 12% experienced muscle aches. Confusion was noted in 19% of cases, and cognitive side effects were reported in 26.2%

Does ECT Cause Memory Loss or Brain Damage?

Yes, ECT does cause temporary memory loss, particularly for events immediately before and after treatment. No, there is no evidence that electroconvulsive therapy (ECT) causes permanent brain damage or memory loss. A study conducted by Read, John (2020) from the University of East London advocates for the immediate suspension of electroconvulsive therapy (ECT) for depression, highlighting concerns over the risks of brain damage and insufficient supporting research.

Can ECT Be Performed on Children or Adolescents?

ECT cannot be performed on children under the age of 11. As elaborated by the Royal College of Psychiatrists (2022), while mental illnesses that respond effectively to ECT are uncommon in children aged 11 to 18, it is beneficial for a small subset of this population. In such cases, a formal and independent second opinion is necessary before treatment proceeds.

Can Electroconvulsive Therapy Cause Permanent Memory Loss?

Yes, electroconvulsive therapy (ECT) can cause permanent memory loss, but it’s uncommon and the risk is negligible. As highlighted by MacQueen, G. (2007) in “The Long-Term Impact of Treatment with Electroconvulsive Therapy on Discrete Memory Systems in Patients with Bipolar Disorder,” recent studies on patients’ perceptions of memory impairment after ECT indicate that 29% to 55% of respondents believe they experienced long-lasting or permanent memory changes, according to a summary by Rose and colleagues. These cases occur more frequently in patients receiving bilateral ECT or higher electrical doses. 

What Is the Most Serious Complication of Electroconvulsive Therapy?

The most serious complication of ECT is death, although it is extremely rare.  As pointed out by Tørring, et al. 2017 in the research review “The Mortality Rate of Electroconvulsive Therapy: A Systematic Review and Pooled Analysis,” the mortality rate is extremely low at 2.1 deaths per 100,000 treatments. This risk is comparable to that of minor surgical procedures under general anesthesia. 

Is ECT Safe?

Yes, modern ECT is safe when administered by trained professionals. Comprehensive monitoring and safety measures are implemented to minimize risks during the procedure. According to Greenberg and Kellner (2005) in “Electroconvulsive therapy: a selected review,” ECT is currently regarded as a low-risk medical procedure, with a mortality rate of approximately 0.002%.

While ECT itself is not painful, patients experience temporary discomfort during treatment. ECT is safely administered during pregnancy, although careful consideration is necessary. ECT does not reduce life expectancy, and many individuals return to normal life after treatment, recounting massive progression in their mental health.

How Often Do Patients Relapse After ECT?

Patients relapse often without maintenance treatment, ranging from 50-80% within 6 months. According to Hall S. 2014 in the chapter “Brain Stimulation Therapy in Psychiatry” from the Encyclopedia of the Neurological Sciences (Second Edition), a Brobdingnagian body of literature underscores the acute efficacy of electroconvulsive therapy (ECT) for major depressive disorder (MDD), citing relapse rates reach as high as 80% within six months.

How Soon Can Patients Resume Normal Activities After ECT?

Patients can resume normal activities after ECT within 24 hours. Patients need 30-60 minutes to recover from anesthesia after an ECT session. The Royal College of Psychiatrists advises that patients must avoid driving, drinking, operating heavy machinery, or making important decisions for at least 24 hours after each treatment.

What Are the Alternatives to Electroconvulsive Therapy?

The alternatives to ECT are medication, transcranial magnetic stimulation (TMS), psychotherapy, and lifestyle changes. Each option presents varying degrees of effectiveness and is more appropriate depending on individual circumstances and treatment needs. The common alternatives to ECT are given as follows:

• Medication: Antidepressants and mood stabilizers are first-line treatments for conditions like major depressive disorder and bipolar disorder. While effective for many, they take weeks to show results.
• Transcranial Magnetic Stimulation (TMS): TMS uses magnetic fields to stimulate nerve cells in the brain and is a non-invasive alternative for treatment-resistant depression, presenting a lower risk of side effects compared to ECT. As determined by the National Alliance on Mental Illness (NAMI), 30-64% of patients report an improvement in symptoms of depression with a very rare (about 0.03%) risk of seizures.
• Psychotherapy: Talk therapies, particularly cognitive behavioral therapy (CBT), support individuals to tackle negative thought patterns and behaviors. They are beneficial for anxiety and depression and are used alone or in combination with medication.
• Lifestyle Changes: Incorporating regular exercise, a healthy diet, and adequate sleep upgrades mental health and is recommended as part of a comprehensive treatment plan.