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Effect of biphasic waveforms on transvenous defibrillation thresholds in patients with coronary artery disease
M R Olsovsky1, D M Hodgson, S R Shorofsky
1Department of Medicine, University of Maryland Medical System, Baltimore 21201, USA.
The American Journal of Cardiology
|November 14, 1997
Abstract:
This study is a prospective, randomized comparison of monophasic and biphasic defibrillation thresholds in 19 patients with a single transvenous lead. Despite using reverse polarity and optimal tilts for the monophasic waveform, the defibrillation threshold was reduced with biphasic shocks from 15.8 +/- 11.3 to 11.5 +/- 6.1 (p <0.05) with comparable reductions of leading edge voltage and current.