[The shape of high-voltage impulse and the effect of defibrillation].
The paper discusses how to choose the optimum shape of a pulse for electric defibrillation of the heart. The authors' data are given on the values of an induced field in the contracting myocardial structure when a defibrillator evokes pulses. Mono- and bipolar pulse-induced changes of the transmembranous potential on the hyper- and depolarized sides of a cell are calculated. Mechanisms of defibrillation in the use of pulses of different shapes are considered.
Moroz
V V
VV
Bogushevich
M S
MS
Vostrikov
V A
VA
Kozlova
E K
EK
Chernysh
A M
AM
D000818:Animals; D001794:Blood Pressure / Q000502:physiology; D004195:Disease Models, Animal; D004285:Dogs; D004554:Electric Countershock / Q000295:instrumentation / Q000379:methods*; D004560:Electricity; D005260:Female; D006329:Heart Conduction System / Q000502:physiology*; D008297:Male; D008564:Membrane Potentials / Q000502:physiology; D008955:Models, Cardiovascular; D009200:Myocardial Contraction / Q000502:physiology; D014693:Ventricular Fibrillation / Q000503:physiopathology* / Q000628:therapy; D016277:Ventricular Function, Left / Q000502:physiology*