Effects of General Anaesthetic Agents on the Efficacy of Electroconvulsive Therapy and EEG Changes in Patients with Depression
Electroconvulsive therapy (ECT) is an effective treatment for severe depression that has not improved with other therapies. During ECT, you receive a general anaesthetic to put you to sleep and a muscle relaxant so you do not feel anything. This study compares several commonly used anaesthetic medicines, such as propofol, etomidate, and methohexital. Researchers want to see if the type of anaesthetic affects how quickly a person's depression begins to lift. They will count how many ECT sessions are needed before patients notice a clear improvement in their mood. They will also monitor brainwaves using an electroencephalogram (EEG) to check the depth of sleep and the quality of the treatment. Participants will complete regular mood checks and memory assessments to track their recovery and monitor any side effects.
At a glance
What is this study about?
Severe depression can be a painful and exhausting condition, especially when standard treatments like talking therapies or antidepressant tablets have not brought enough relief. In these cases, doctors often recommend electroconvulsive therapy (ECT). ECT sends a brief, carefully controlled electrical current through the brain while you are asleep under general anaesthesia. This triggers a short, controlled seizure that can help reset brain chemicals and relieve severe depressive symptoms.
Because ECT is always done under general anaesthesia, patients are given medication to keep them asleep and comfortable. However, different anaesthetic drugs can interact with the brain in slightly different ways. Some may affect how easily the brain responds to ECT, while others might change how quickly a person wakes up or how their memory feels afterwards.
This clinical trial is comparing standard, well-established anaesthetic medicines to see which ones produce the best results. Researchers want to learn if certain anaesthetics help people recover from depression in fewer ECT sessions, while keeping side effects as low as possible. The findings could help doctors tailor future anaesthetic choices to each individual patient, improving both comfort and recovery.
Key takeaways
- The study explores which standard anaesthetic medicine works best alongside ECT for severe depression.
- It aims to find out if certain anaesthetics help people get better in fewer sessions.
- All participants receive standard, approved general anaesthetics given by specialist doctors.
- Brainwaves, mood, and memory will be monitored throughout your treatment course.
- Taking part will not delay or interrupt your planned hospital care.
Who may be eligible?
This study is open to adults aged 18 and over who have severe unipolar depression (depression that does not involve periods of mania) and whose care team has already decided that ECT is the best next step in their treatment.
Men and women are equally welcome to take part. You must be able to have general anaesthesia safely and agree to complete regular mood checks and simple memory assessments during your care.
People with certain medical conditions that make general anaesthesia unsafe, or those with specific other neurological disorders, may not be able to join. Your doctor or the study team will review your full medical history to confirm whether this trial is safe and suitable for you.
Could this study suit you?
Answer these quick questions to see if you may be eligible. This is a guide only — the research team makes the final call.
- You are aged 18 or older.
- You have a diagnosis of severe unipolar depression.
- You and your doctor have already decided that ECT is an appropriate treatment for you.
- You are able to receive a general anaesthetic safely.
- You are willing to complete mood surveys and memory checks during your hospital visits.
What does participation involve?
Taking part takes place alongside your planned ECT course, which usually involves hospital visits two to three times a week for several weeks. Before each treatment, an anaesthetist will give you an anaesthetic to send you to sleep and a muscle relaxant, exactly as happens in standard care.
During each session, small sticky sensors will be placed on your head to record your brain activity (an EEG). The research team will track how deeply you sleep and how your brain responds during the treatment.
You will be asked to fill out mood questionnaires, such as the PHQ-9, after your first, sixth, and final sessions. A healthcare professional will also assess your depressive symptoms using a standard rating scale and check your memory and thinking. Once your full course of ECT is finished, your participation in the study ends.
Potential risks and benefits
Locations (1)
- —UnverifiedFinland
Common questions
Will I feel any pain during the ECT treatment?
No. You will be fully asleep under a general anaesthetic and given medicine to relax your muscles, so you will not feel or remember the treatment itself.
Are the anaesthetics in this study experimental?
No. The medicines being compared, such as propofol and etomidate, are standard, approved anaesthetics routinely used in UK hospitals.
What is an EEG test?
An EEG involves placing small, painless sticky pads on your scalp. It simply listens to and records the natural electrical signals your brain produces while you sleep.
Will taking part delay my depression treatment?
No. The study is designed to run alongside your normal ECT schedule, so your treatment will start and continue as planned by your medical team.
Can I stop taking part if I change my mind?
Yes. You can withdraw from the study at any point without giving a reason. Your ongoing medical care and ECT will continue as normal.
How to find out more
Always speak to your GP or specialist before deciding to take part in a study.
Discussion
Community discussion
Powered by our forum at community.patient.info. Please be respectful — this is not medical advice.