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在晚近对人体心律失常的电生理测定发生兴趣之前,对心律失常时及转复为正常节律后的心脏及循环的血液动力学表现,已作了许多研究。心律失常时休息及运动对心脏工作的影响,已在人体及实验动物作过研究。
Much research has been done on the recent cardiac and circulatory hemodynamic responses to arrhythmia and to normal circadian rhythms before the recent interest in electrophysiological measurement of arrhythmia in humans. The effects of rest and exercise on heart work during arrhythmia have been studied in humans and laboratory animals.