title: Effect of biphasic waveforms on transvenous defibrillation thresholds in patients with coronary artery disease.
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.
authors.affiliation: Department of Medicine, University of Maryland Medical System, Baltimore 21201, USA.
authors.forename: M R
authors.initials: MR
authors.lastname: Olsovsky
authors.forename: D M
authors.initials: DM
authors.lastname: Hodgson
authors.forename: S R
authors.initials: SR
authors.lastname: Shorofsky
authors.forename: N G
authors.initials: NG
authors.lastname: Kavesh
authors.forename: M R
authors.initials: MR
authors.lastname: Gold
mesh_terms: 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