[Transthoracic defibrillation of heart ventricles: effectiveness and safety of mono- and bipolar impulses].
Two widely used forms of defibrillating pulse were compared in experiments on narcotized dogs weighing 7 to 39 kg. Gurvich quasisinusoidal bipolar pulse was found to be much more effective than Edmark's critically dampered sinusoidal monopolar pulse. A close direct correlation between body weight (m) and threshold values of current (I) was found characteristic of both pulse forms. The following regression equations were derived: I = 0.32.m + 3.78 for a bipolar pulse and I = 0.76.m + 2.5 for monopolar one. A bipolar noncardiosynchronized pulse during exposure of an intact heart was found to induce a far less in duration reversible ventricular asystole and a much rarer development of fibrillation of cardiac ventricles.
Vostrikov
V A
VA
Bogushevich
M S
MS
Kholin
P V
PV
D000818:Animals; D004285:Dogs; D004554:Electric Countershock / Q000379:methods*; D005260:Female; D008297:Male; D008955:Models, Cardiovascular; D012449:Safety; D014693:Ventricular Fibrillation / Q000628:therapy*
Transtorakal'naia defibrilliatsiia zheludochkov serdtsa: éffektivnost' i bezopasnost' mono- i bipoliarnogo impul'sov.