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Related Experiment Videos

Oxygen supplementation during electroconvulsive therapy.

J Räsänen1, D J Martin, J B Downs

  • 1Department of Anesthesiology, Ohio State University College of Medicine, Columbus 43210-1228.

British Journal of Anaesthesia
|November 1, 1988
PubMed
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Ventilation with 100% oxygen during electroconvulsive therapy (ECT) maintains seizure duration and cardiovascular response. Consistent oxygen levels are crucial for reproducible ECT seizures, with 100% oxygen being safe.

Area of Science:

  • Anesthesiology
  • Neurology
  • Critical Care Medicine

Background:

  • Electroconvulsive therapy (ECT) is a vital psychiatric treatment.
  • Optimizing ECT requires understanding physiological responses to ventilation.
  • The impact of varying inspired oxygen concentrations on ECT seizure characteristics and patient response is not fully elucidated.

Purpose of the Study:

  • To investigate the effects of 30% and 100% oxygen ventilation on circulatory and electrocardiographic responses during ECT.
  • To determine the influence of inspired oxygen concentration on electroconvulsive therapy seizure duration.
  • To assess the incidence of hypoxemia and its association with airway control during ECT under different oxygenation levels.

Main Methods:

  • A study involving 12 patients and 40 ECT treatments.

Related Experiment Videos

  • Comparison of ventilation with 30% and 100% oxygen.
  • Monitoring of seizure duration, Sao2, heart rate, arterial pressure, and cardiac arrhythmias.

    • Main Results:

    • A 25% decrease in seizure duration was observed with 30% oxygen compared to 100% oxygen (P < 0.0125).
    • Hypoxemia (SaO2 < 90%) occurred in five treatments with 30% oxygen and two with 100% oxygen, invariably linked to loss of airway control.
    • Heart rate, arterial pressure, and cardiac arrhythmias were not significantly affected by oxygen supplementation.

    Conclusions:

    • Inspired oxygen concentration significantly impacts electroconvulsive therapy seizure activity, necessitating consistent levels for reproducibility.
    • Breathing 100% oxygen does not adversely affect the cardiovascular response to ECT.
    • Maintaining adequate airway and ventilation control is critical to prevent rapid arterial hypoxemia during or after ECT seizures, irrespective of oxygen supplementation.