EFFECT OF AGE ON THE COMPONENTS OF ATRIOVENTRICULAR CONDUCTION IN NORMAL MAN

我们利用信号平均，高分辨率心电图记录希氏 111例正常巴尔的摩人体表束电位 纵向研究（BLS）志愿者年龄21至79岁。 通过允许 测量束近端和远端的传导时间 他的这项技术应该能增强我们对年龄相关的 心脏传导系统的变化。 在52名女性中，PR和HV均未发生 间隔时间与年龄有关。 在59名男性中，以下年龄关系 发现： PR间期= 142.4 msec +.477年龄.388小于.01; PH间期= 105.3 msec +4.27年龄.393小于.01; PR段= 47.6 msec +.315年龄.328小于.02; 近端PR段= 10.5 msec +.267年龄.330小于.02。 因此，年龄相关的PR间期延长仅见于男性， 似乎主要是由于近端PR段的延迟，据推测 反映了房室交界处的延迟。

We have utilized a signal averaging, high resolution ECG to record His bundle potentials from the body surface of 111 normal Baltimore Longitudinal Study (BLS) volunteers ages 21 to 79. By allowing measurements of conduction time both proximal and distal to the bundle of His, this technique should enhance our understanding of the age-related changes in the cardiac conduction system. In 52 women, neither PR nor HV interval was related to age. In 59 men, the following age relationships were found: PR interval = 142.4 msec + .477 age .388 less than .01; PH interval = 105.3 msec + 4.27 age .393 less than .01; PR segment = 47.6 msec + .315 age .328 less than .02; Proximal PR segment = 10.5 msec + .267 age .330 less than .02. Thus, an age-related prolongation of PR interval is found only in men and appears to be due largely to a delay in the proximal PR segment, presumably reflecting delay within the atrioventricular junction.