Sudden death in epilepsy: can any lessons be learned from convulsive therapy?

Area of Science:

• Neurology
• Psychiatry
• Medical History

Background:

• Convulsive therapy, utilizing chemical or electrical induction, has been employed since the 1930s.
• Early applications were associated with high mortality rates, primarily due to cardiac and respiratory complications.
• Refinements in technique have progressively improved safety over time.

Purpose of the Study:

• To review the historical evolution and safety profile of convulsive therapy.
• To identify factors contributing to mortality and the impact of procedural advancements.
• To assess the current risk associated with electrical convulsive therapy (ECT).

Main Methods:

• Historical review of convulsive therapy techniques and outcomes.
• Analysis of mortality causes, including cardiac and respiratory events.
• Evaluation of the impact of specific interventions like muscle paralysis, anesthesia, ventilation, and oxygenation.

Main Results:

• Mortality rates have significantly decreased with technical improvements in convulsive therapy.
• Key advancements include muscle paralysis, brief anesthesia, and essential respiratory support.
• Electrical convulsive therapy is now considered a very low-risk procedure, even in elderly populations.

Conclusions:

• Modern convulsive therapy, particularly ECT, is a low-risk intervention due to procedural refinements.
• Respiratory support during and after seizures appears crucial in reducing mortality.
• The findings suggest a potential respiratory origin for some deaths during epileptic seizures.