Psychiatry Learning Map

Psychiatry: treatments

Electroconvulsive therapy (ECT)

Electroconvulsive therapy (ECT) is a treatment in which a brief, controlled electrical current causes a short seizure under general anaesthesia. It is one of the most effective treatments for severe depression and some other conditions, and psychiatrists must know when to use it and how to give it safely.

Depth by stage, Pre-U → Consultant (details)

What is it?

ECT often surprises people because of its old image in films. Modern ECT is given in a hospital procedure room under a short general anaesthetic and muscle relaxant, so the patient sleeps through it and the body barely moves. A brief electrical stimulus to the scalp triggers a seizure lasting less than a minute or so, which is monitored on a brain-wave trace.

A course is usually given two or three times a week for several weeks. It is used mainly when depression is severe, life-threatening (for example when a person stops eating or drinking, or is acutely suicidal), psychotic, or has not responded to other treatments. It is also used for catatonia and sometimes for mania or schizophrenia.

The main side effects are short-term confusion and memory problems around the time of treatment, headache and muscle aches. Consent, capacity and the law matter greatly, and psychiatrists must explain the procedure honestly.

Why does a psychiatrist need it?

ECT can be life-saving when nothing else works or there is no time to wait for medicines. A psychiatrist must judge when it is indicated, obtain valid consent (or follow the legal process when a patient lacks capacity), work with the anaesthetist, and adjust the treatment to balance benefit against memory side effects.

What level is expected at each stage?

Scale: 1. Aware → 2. Understands → 3. Applies → 4. Masters / Teaches. What the levels mean.

  1. Pre-UNot expected
  2. Pre-clinicalNot expected
  3. ClinicalAwareKnows what ECT is and its main indications from the psychiatry posting; may observe a session.
  4. HousemanshipAwareAware of ECT if covering psychiatric or medical patients who receive it.
  5. Medical officerUnderstandsAssists in ECT sessions, prepares patients and monitors recovery under supervision.
  6. Psych traineeAppliesAssesses suitability, obtains consent, administers ECT and adjusts dose and electrode placement.
  7. Specialist / consultantMasters / TeachesLeads the ECT service, manages complex cases and trains others.

What are the key topics?

Indications

  • Severe or psychotic depression, especially with high suicide risk or refusal of food and fluids
  • Treatment-resistant depression
  • Catatonia of any cause
  • Severe or treatment-resistant mania
  • Selected cases of treatment-resistant schizophrenia, sometimes alongside clozapine
  • Situations where medicines are risky, such as some cases in pregnancy or frail older adults

Pre-ECT work-up

  • Full psychiatric and medical history; physical examination
  • Anaesthetic assessment, fasting and review of heart, lung and dental health
  • Relevant tests such as ECG and blood tests as needed
  • Review of medicines that affect seizure threshold (e.g. benzodiazepines, anticonvulsants, lithium)
  • Assessing capacity and obtaining written informed consent; legal procedures when consent cannot be given

Technique

  • General anaesthesia and muscle relaxation with oxygenation
  • Electrode placement: bilateral, bifrontal or right unilateral, and their trade-offs
  • Brief-pulse and ultra-brief-pulse stimulation
  • Determining dose, for example by seizure-threshold titration
  • Monitoring seizure by EEG and motor activity; recognising inadequate or prolonged seizures
  • Course length, frequency and when to stop; continuation and maintenance ECT

Side effects and safety

  • Post-ictal confusion and transient memory loss (both for new learning and past events)
  • Headache, muscle aches, nausea
  • Cardiovascular changes during the seizure
  • Rare anaesthetic complications
  • Measuring cognition before and during a course
  • Relapse prevention after a course with medicine or maintenance ECT

Ethics, law and communication

  • Countering stigma and myths with accurate information
  • Capacity and consent; role of family members
  • Use of ECT under mental health legislation and hospital policy in Malaysia
  • Documentation and audit of ECT practice

How is it learned and assessed?

  • Brief coverage in the undergraduate psychiatry posting
  • Hands-on sessions in the ECT suite as a medical officer and trainee, with logbook entries of procedures
  • MMed (Psychiatry) clinical and written examinations include ECT indications, technique and consent
  • MRCPsych Paper A and Paper B cover ECT physiology, evidence and practice; CASC stations may test explaining ECT to a patient or relative
  • Consultants update through ECT accreditation standards, audits and CPD

Typical textbooks and resources

  • The ECT Handbook — Royal College of Psychiatrists
  • The Maudsley Prescribing Guidelines in Psychiatry — sections on ECT and anaesthetic interactions
  • Shorter Oxford Textbook of Psychiatry — chapter on physical treatments
  • MOH Malaysia hospital ECT policies and local protocols

Titles are widely used examples; editions change. Use university libraries or legitimate purchases.

Common questions

Is ECT still used today?

Yes. It is used in hospitals worldwide, including in Malaysia, mainly for severe depression and catatonia. It is given under general anaesthetic and is very different from the frightening images in old films.

Does ECT damage memory?

Short-term confusion and some memory loss around the time of treatment are common. Most of this improves in the weeks after a course, but some people report lasting gaps for events near the treatment period. Psychiatrists discuss this openly and monitor memory during treatment.

Related subjects

Official sources to check