近十多年来,心脏起搏器的临床应用发展很快,由于起搏系统工艺水平不断提高,多功能不同类型起搏器相继问世,起搏治疗的应用范围越来越广。双心腔生理性起博和抗心动过速起搏的采用,更使起搏治疗提高到一个新的阶段。现将与生理性起搏的几个有关问题介绍如下。 一、概念:正常心脏的房室收缩和舒张是顺序进行的,从而达到最大的排血量。心房的功能表现在两方面:①泵血作用:在心室舒张期将血排入心室;②容纳作用:收容腔静脉的回血进入心房。如 In recent ten years, the clinical application of pacemakers has developed rapidly. Due to the continuous improvement of pacing system technology, various types of pacemakers have come into being one after another, and the application of pacing therapy has become more and more widespread. Bi-cardiac physiological pacing and anti-tachycardia pacing more pacing treatment to a new stage. Now with the physiological pacing of several related issues are as follows. First, the concept: Atrioventricular atrophy and relaxation of the normal heart is carried out in order, so as to achieve the maximum amount of bleeding. Atrial function in two ways: ① pumping blood: the ventricular diastolic blood will be discharged into the ventricle; ② accommodation: the venous cavity to receive blood into the atrium. Such as