Related Experiment Videos
Electroconvulsive therapy dosage in continuation/maintenance electroconvulsive therapy: when is a new threshold
Barbara Wild1, Gerhard W Eschweiler, Mathias Bartels
1Department of Psychiatry, University of Tübingen, Tübingen, Germany. bawild@med.uni-tuebingen.de
The Journal of ECT
|December 14, 2004
Summary
Electroconvulsive therapy (ECT) seizure thresholds may decrease after 2 months without treatment. Retitrating seizure thresholds is necessary for patients receiving ECT with longer intervals between sessions.
Area of Science:
- Neuroscience
- Psychiatry
- Clinical Medicine
Background:
- Electroconvulsive therapy (ECT) efficacy and side effects are energy-dependent, relative to individual seizure thresholds.
- Seizure thresholds typically increase during frequent ECT and normalize 6 months post-treatment.
- Seizure thresholds in continuation ECT or after early relapse, with intervals longer than days but less than 6 months, remain unexamined.
Purpose of the Study:
- To investigate changes in electroconvulsive therapy (ECT) seizure thresholds in patients with treatment intervals exceeding 14 days.
- To determine if prolonged intervals between ECT sessions impact seizure duration and threshold.
Main Methods:
- Retrospective analysis of 19 patients undergoing repeated ECT with intervals of at least 14 days.
- Measurement of seizure duration using electroencephalography (EEG) and the cuff technique.
Main Results:
- Significant changes in seizure duration were observed when ECT treatments were separated by more than 60 days.
- Findings suggest a potential decrease in seizure threshold or loss of anticonvulsant action after approximately 2 months.
Conclusions:
- Extended intervals (over 60 days) between ECT sessions may alter seizure thresholds.
- Retitration of seizure thresholds is recommended after intervals exceeding 2 months to ensure optimal ECT efficacy and safety.