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心室除颤的电能量问题关于心室除颤究竟用多少电能才恰当呢?这是个有争论的问题,有人发现对超体重的人除颤效果较差;同时发现对家兔(2.3kg)除颤的电能量比马(340kg)的少得多,因此认为除颤的电能量与体重有关,体重越重所用的电能量越大,甚至有推荐用能发放500～1,000W·Sec 的除颤器者。但当电能量越大时心肌损伤便越明显,此外,这些除颤器会较大,且不那么容易携带和控制。另一方面,现在不少作者认为除颤的电能量与体重无关。Tacker 最近提出除颤的最大电能量是近4J(译注:1 J=1W·Sec/kg;或成人的除颤电能量由300J开始,当除颤失败后才逐步增加电能量。关于影响除颤成功的因素 Kerber 等对52例病人进行除颤。其中38例除颤成功,14例除颤失败。对比这两组病人的体重、心脏重量、除颤电能量/kg(体
Electricity problems with ventricular defibrillation What is the proper amount of electrical energy for ventricular defibrillation? It is a controversial issue. Some have found that defibrillators are weaker in over-weight individuals. In addition, defibrillation of rabbits (2.3 kg) has been found Therefore, it is considered that the energy of defibrillation is related to body weight. The heavier the weight is, the larger the amount of electric energy used is, and even a defibrillator capable of delivering 500 to 1,000 W · Sec is recommended By. However, the greater the electrical energy is, the more pronounced the myocardial damage is. In addition, these defibrillators are larger and less easily portable and controlled. On the other hand, many authors now think that the energy of defibrillation has nothing to do with weight. Tacker recently proposed that the maximum electrical energy for defibrillation is approximately 4 J, or the adult defibrillator energy starts at 300 J. When the defibrillation fails, the electrical energy is gradually increased. The success factors of Kerber and other defibrillation on 52 patients, including 38 cases of defibrillation, defibrillation failure in 14 cases.Comparison of these two groups of patients weight, heart weight, defibrillating energy / kg