Maisch B, Langenfeld H, Steilner H
Z Kardiol. 1986 Aug;75(8):480-8.
Physiological stimulation can be achieved by either bifocal or rate responsive pacing. The latter pacemakers adapt the heart rate to physical activity by biological signals. Of many possible approaches only three pacemaker systems for rate responsive pacing are available: the QT pacemaker (Tx or Quintech), the respiratory Biorate pacemaker and the activity detecting Activitrax. First our own experiences (8 QT, 6 Biorate, 8 Activitrax pacemakers) and a survey of 95 QT- and 37 Biorate pacemakers from 11 centers are reported. The Biorate pacemaker functions without any problems, its present disadvantage is limited programmability. With the Tx pacemaker failing frequency adaptation (26%) was found more often in the early series, mostly due to voltage polarisation at the tip of the electrode. The Activitrax pacemaker gives satisfactory frequency adaptation, largely depending on the activity of the muscles of the shoulder and pectoral region.
生理刺激可通过双腔起搏或频率应答起搏来实现。后者通过生物信号使心率适应身体活动。在众多可能的方法中，仅有三种用于频率应答起搏的起搏器系统：QT起搏器（Tx或Quintech）、呼吸型生物速率起搏器以及活动感知型Activitrax。首先报告了我们自己的经验（8台QT起搏器、6台生物速率起搏器、8台Activitrax起搏器）以及来自11个中心的95台QT起搏器和37台生物速率起搏器的调查情况。生物速率起搏器运行没有任何问题，其目前的缺点是可编程性有限。Tx起搏器在早期系列中更常出现频率适应失败（26%），主要是由于电极尖端的电压极化。Activitrax起搏器能提供令人满意的频率适应，很大程度上取决于肩部和胸部肌肉的活动。
