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Ventilation strategies used during anaesthesia for electroconvulsive therapy: scoping review protocol

Background Electroconvulsive therapy (ECT) is an established treatment for depression and mania, with its therapeutic effect deriving from the induced seizure rather than the electrical stimulus itself. Anaesthetic agents are routinely used to reduce procedural discomfort, requiring assisted ventilation. However, these agents may raise the seizure threshold, necessitating higher stimulus doses and potentially increasing adverse effects. Although various strategies have been explored, pre-ECT hyperventilation—despite its known ability to lower the seizure threshold—remains insufficiently investigated. This review aims to examine the various ventilation approaches employed during anaesthesia for ECT, assess how hyperventilation has been applied to augment ECT, explore their impact on clinical outcomes and identify the outcome parameters most frequently investigated in ECT studies.

BMJ     Jun 30, 2025