Stimulus characteristics in electroconvulsive therapy. A pragmatic review

Area of Science:

• Neurology
• Psychiatry
• Medical Physics

Background:

• Electroconvulsive therapy (ECT) is a vital treatment modality.
• Normalization of ECT requires disseminating current knowledge on its technical aspects.
• The electrical stimulus is a complex and critical component of ECT.

Purpose of the Study:

• To review current information on electroconvulsive therapy (ECT) stimulus parameters.
• To compare methods for determining ECT charge.
• To highlight areas needing further research in ECT stimulus configuration.

Main Methods:

• Literature review of frequency, number of sessions, and electrode placement in ECT.
• Presentation of stimulus titration and age-based methods for ECT charge determination.
• Analysis of limitations in current ECT charge metrics.

Main Results:

• Efficacy varies with electrode placement, frequency, and number of sessions.
• Stimulus titration and age-based methods offer different approaches to ECT charge.
• Existing summary metrics for ECT charge have limitations.

Conclusions:

• Further research is needed to fully understand stimulus parameters: duration, current amplitude, frequency, and pulse width.
• Optimizing electrical stimulus knowledge is essential for effective ECT.
• Standardizing ECT stimulus parameters can improve treatment outcomes.