Journal of the American College of Cardiology
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J. Am. Coll. Cardiol. · Sep 1999
Comparative StudyThe effects of biphasic and conventional monophasic defibrillation on postresuscitation myocardial function.
The purpose of this study was to compare the effects of biphasic defibrillation waveforms and conventional monophasic defibrillation waveforms on the success of initial defibrillation, postresuscitation myocardial function and duration of survival after prolonged ventricular fibrillation (VF). ⋯ Lower-energy biphasic waveform shocks were as effective as conventional higher energy monophasic waveform shocks for restoration of spontaneous circulation after 4 and 7 min of untreated VF. Significantly better postresuscitation myocardial function was observed after biphasic waveform defibrillation.