Labetalol administration following electroconvulsive therapy carries a rare but severe risk of asystole.
May warrant caution with labetalol post-ECT; single case leaves open true incidence and need for prospective data.
The rare complication of asystole with beta-adrenergic blockade by labetalol following electroconvulsive therapy (ECT) is described with a literature review of cardiac mechanisms (33 references).
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Kenneth R. Kaufman (1994) studied this question.
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