Tilbury R T, Vlietstra R E, Hayes D L
Mayo Clin Proc. 1987 Jul;62(7):607-11. doi: 10.1016/s0025-6196(12)62300-3.
In the past, pacemaker candidates with "chronotropic incompetence" or chronic atrial arrhythmias have been treated with fixed-rate cardiac pacing. During physical exertion, however, increased cardiac output is often limited by this fixed rate. A physiologic pacemaker that increases the cardiac pacing rate as a response to physical activity is now available. The benefits of this pacemaker are increased heart rate during physical activity and increased exercise tolerance.
过去，患有“变时性功能不全”或慢性房性心律失常的起搏器候选者一直接受固定频率心脏起搏治疗。然而，在体力活动期间，心输出量的增加常常受到这种固定频率的限制。现在有一种能根据体力活动相应增加心脏起搏频率的生理性起搏器。这种起搏器的好处是在体力活动时心率增加，运动耐量提高。
