起搏器由固定型发展到按需型,避免了因自身心律与起搏的不同步而产生的室颤。近年来又先后研制出程控起搏器、房室顺序起搏器、频率应答式起搏器,以及抗心律失常等新型起搏器,是起搏发展史上一个新的飞跃。房室顺序和频率应答式起搏器的价钱昂贵,而且房室顺序起搏心房 Pacemakers from the fixed-type development to on-demand, to avoid due to their own pace and ventricular arrhythmia arising from ventricular fibrillation. In recent years, it has also developed a pacemaker, atrioventricular pacemaker, frequency response pacemaker, and anti-arrhythmia and other new pacemaker, pacing in the history of a new leap forward. Atrioventricular order and frequency-responsive pacemakers are expensive, and atrioventricular pacing atrial pacing