[Comparative evaluation of the effectiveness of different shapes of defibrillating pulses].
Experiments in dogs were performed to investigate the defibrillation efficacy of the trapezoidal impulses with ascending and descending slope, the rectangular impulses, and the sinusoidal impulses. The lowest threshold values for current strength, energy and charge were observed when defibrillating the heart by means of rectangular impulses and especially by trapezoidal impulses with ascending slope. Classical strength-duration curves for trapezoidal impulse with ascending slope were recorded. As a result, the suggested duration of the trapezoidal defibrillating impulse to be used is between 4 and 9 ms.
D000818:Animals; D004285:Dogs; D004554:Electric Countershock / Q000379:methods*; D004558:Electric Stimulation / Q000379:methods; D005069:Evaluation Studies as Topic; D006321:Heart / Q000503:physiopathology; D012684:Sensory Thresholds / Q000502:physiology; D014693:Ventricular Fibrillation / Q000209:etiology / Q000628:therapy
Sravnitel'naia otsenka éffektivnosti defibrilliruiushchikh impul'sov razlichnoĭ formy.