Engineering and physiological considerations of direct capacitor-discharge ventricular defibrillation.

摘要: The amount of energy, current and charge per gram heart were determined on a series 36 dogs. data, which are examined the basis duration (time constant), show that three criteria different. optimum range using energy as criterion is 0·03–3 ms. Minimum peak was required with 4 ms capacitor discharge pulse. There no for minimum charge. It found although short-duration (0·02–3·0 ms) produced defibrillation, high impaired contractility ventricles. From this study, capacitor-discharge defibrillation 0·3–4 Estimates presented amounts to defibrillate ventricles large animals.