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- W2048010079 abstract "Ten patients with a history of ventricular tachycardia or ventricular fibrillation underwent electrophysiologic study with programmed stimulation before and 90 minutes after oral administration of bethanidine sulfate, 20 mg/kg. Mean plasma bethanidine concentration was 2.62 ± 2.2 (± SD) μg/ml at the start of repeat testing. This dose of bethanidine produced no effect on sinus node function, atrioventricular conduction, or atrial or ventricular refractoriness. Ventricular tachycardia or fibrillation, inducible in all patients during the control study, could still be initiated by ventricular stimulation in 9 of 10 patients after bethanidine. Bethanidine suppressed the ability to initiate an arrhythmia in one patient with ventricular fibrillation during control stimulation. Orthostatic hypotension was seen in all patients despite pretreatment with the tricyclic antidepressant, protriptyline, 15 mg every 8 hours. The results suggest that bethanidine has few electrophysiologic effects and is of limited efficacy during electrophysiologic testing in patients with life-threatening ventricular arrhythmias." @default.
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- W2048010079 date "1984-11-01" @default.
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- W2048010079 title "Acute electrophysiologic effects of bethanidine sulfate in patients with ventricular tachycardia or fibrillation" @default.
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- W2048010079 doi "https://doi.org/10.1016/0002-8703(84)90748-8" @default.
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