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安置人工心脏起搏器(下称起搏器)就是对心肌给予人工的电流刺激,使心脏产生一定节律的搏动,从而达到治疗心动过缓性心律失常的目的。一、起搏器的原理: 对有心动过缓性心律失常患者的心肌局部,给予有规则的人工电流刺激,使局部的兴奋传到整个心肌引起心肌收缩,以维持适当的心脏搏动次数。起搏器的刺激传导: 进入右心室心肌内的电极,产生电压高度为5伏特、幅度为1毫秒的电流刺激,这种电流刺激(心肌的去极化)从右心室→左心室→希氏束→传入心房而引起心肌收缩,因而形成与心室性期外收缩相似的
Set artificial heart pacemaker (hereinafter referred to as pacemaker) is to give the artificial current stimulation of the heart, the heart has a certain rhythmic beat, so as to achieve the purpose of treatment of bradycardia arrhythmia. First, the principle of pacemaker: Bradycardia in patients with bradycardia local, given a regular artificial current stimulation, the local excitement spread to the entire myocardium caused by myocardial contraction, in order to maintain proper heartbeat frequency. Stimulation of Pacemaker Conduction: Electrodes entering the right ventricular myocardium generate a current stimulus with a voltage height of 5 volts and an amplitude of 1 millisecond, which current stimulates (depolarization of the myocardium) from the right ventricle → left ventricle → His Beam → into the atrium and cause myocardial contraction, and thus form similar to ventricular contraction