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Related Experiment Videos

Visually determined high-frequency seizure activity

C M Swartz1, R Abrams, K Rasmussen

  • 1Department of Psychiatric Medicine, East Carolina University School of Medicine, Greenville, North Carolina 27858-4354.

Convulsive Therapy
|September 1, 1994
PubMed
Summary
This summary is machine-generated.

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Electroconvulsive therapy (ECT) seizure duration, specifically "spike seizure duration," was reliably measured by clinicians. This metric, important for comparing ECT methods, showed high interrater reliability.

Area of Science:

  • Neuroscience
  • Psychiatry
  • Clinical Neurophysiology

Background:

  • Electroconvulsive therapy (ECT) is a psychiatric treatment.
  • Measuring seizure duration during ECT is crucial for understanding treatment efficacy.
  • Different ECT methods, like unilateral and bilateral ECT, may have varying efficacies.

Purpose of the Study:

  • To assess the reliability of measuring electroencephalogram (EEG) seizure duration during high-frequency electroconvulsive therapy (ECT).
  • Specifically, to determine the interrater reliability of 'spike seizure duration' measurements.

Main Methods:

  • Two experienced clinicians independently rated EEG recordings from ECT sessions.
  • Measurements included total EEG seizure duration and "spike seizure duration."

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  • Interrater reliability was calculated using the kappa statistic.

    • Main Results:

    • High interrater reliability was found for determining spike seizure duration (kappa = 0.92, p < 10(-6)).
    • This reliability was achieved despite raters using different criteria for endpoint selection.
    • Spike seizure duration, along with other measures, has previously shown differences between ECT methods of varying efficacy.

    Conclusions:

    • The measurement of spike seizure duration in ECT is highly reliable between experienced clinicians.
    • This reliable metric can be used to differentiate between ECT methods with different clinical efficacies.
    • Further research can utilize this validated measurement in comparative ECT studies.