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Anaesthesia for electroconvulsive therapy: use of propofol revisited
B Fredman1, M M Husain, P F White
1Department of Anesthesiology and Pain Management, University of Texas Southwestern Medical Centre, Dallas 75235-9068.
Abstract:
In three clinically depressed patients undergoing repeated electroconvulsive therapy (ECT) with either propofol or methohexitone, dose-dependent decreases in the duration of motor and EEG seizure activity were noted. Use of a 'minimally' hypnotic dose of propofol (0.75-1.0 mg kg-1) was associated with a seizure duration which was comparable to standard hypnotic doses of methohexitone. We conclude that doses of propofol < 1.5 mg kg-1 are associated with a clinically acceptable duration of EEG seizure activity (> 30 s) during ECT.
Insights
Electroconvulsive therapy (ECT) with propofol showed dose-dependent seizure duration. Minimally hypnotic propofol doses maintained seizure activity comparable to methohexitone, suggesting safety for ECT.
Area of Science:
- Neuroscience
- Anesthesiology
- Psychiatry
Background:
- Electroconvulsive therapy (ECT) is a vital treatment for severe depression.
- Anesthetic agents like propofol and methohexitone are used during ECT.
- Seizure duration is a critical parameter for ECT efficacy and safety.
Observation:
- Three patients with clinical depression undergoing ECT were studied.
- Both propofol and methohexitone were administered as anesthetic agents.
- Dose-dependent effects on motor and electroencephalogram (EEG) seizure duration were observed.
Findings:
- Lower doses of propofol (0.75-1.0 mg kg-1) resulted in seizure durations comparable to standard methohexitone doses.
- Propofol exhibited a dose-dependent reduction in seizure duration.
- Propofol doses below 1.5 mg kg-1 were associated with clinically acceptable EEG seizure durations (> 30 seconds).
Implications:
- Propofol, at specific doses, can be a suitable anesthetic for ECT.
- Careful dose titration of propofol may optimize seizure duration during ECT.
- These findings support the use of lower propofol doses in ECT to balance anesthesia and therapeutic seizure activity.