Effect of biphasic waveforms on transvenous defibrillation thresholds in patients with coronary artery disease.
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.
Olsovsky
M R
MR
Department of Medicine, University of Maryland Medical System, Baltimore 21201, USA.
Hodgson
D M
DM
Shorofsky
S R
SR
Kavesh
N G
NG
Gold
M R
MR
D000368:Aged; D000369:Aged, 80 and over; D003327:Coronary Disease / Q000628:therapy*; D017147:Defibrillators, Implantable; D004554:Electric Countershock / Q000295:instrumentation / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies