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正常频率反应性起搏器心电图符合生理要求的心脏起搏,应具备三个条件:①房室顺序,即心房和心室顺序收缩;②频率反应,即随着人体活动量大小而有相应的频率快慢变化;③正常的心室激动顺序。正常心脏由于具备这些功能,使心排血量维持在生理需要水平,保证最佳的生活质量和作功能力。一般的起搏器,虽然具有按需功能,但频率均固定不变(如60ppm或70ppm),只有频率反应性起搏器(Rate responsive pacemaker),能随身体需要而变更起搏频率,以满足人体活动时对心排血量和氧消耗量的需要。这种起搏器是通过生
Normal frequency response pacemaker ECG in line with physiological requirements of cardiac pacing, should have three conditions: ① atrioventricular order, that is, contraction of the atria and ventricle; ② frequency response, that is, with the size of human activity and the corresponding frequency Speed changes; ③ normal ventricular activation order. Normal heart due to have these features, the cardiac output to maintain the level of physiological needs, to ensure the best quality of life and work ability. A typical pacemaker, with on-demand functionality but a constant frequency (eg, 60 ppm or 70 ppm), has only a pace-responsive pacemaker that can change pacing frequency as the body needs to meet Human activity on cardiac output and oxygen consumption needs. This pacemaker is passed