广州市老年人心电变化的特点

CHARACTERISTICS OF HEART RATE VARIABILITY AND ELECTROCARDIOGRAM CHANGES IN THE ELDERLY

目的:了解广州市老人心脏随增龄变化的特点。方法:采集1 100例广州老人和640例青壮年静息12导联心电图和48例24 h心率变异性指标:SDNN、SDANN、SDNNIndex、RMSSD、PNN50,并对其结果进行统计分析。结果:老人组心肌劳损、心房颤动、早搏非常显著高于青壮年组(P<0.01),窦性心律失常、室内阻滞也明显高于对照组(P<0.05)。心率变异性指标除SDNNIndex外,SDNN、SDANN、RMSSD、PNN50均显著低于青壮年组。结论:老年心脏随增龄发生退行性改变,应定期心电图检查,有助于早期发现老人心脏损害。

Objective. To demonstrate characteristics of heart rate variability （HRV） and electrocardiogram changes in the elderly of Guangzhou. Methods： 1 100 cases of the elderly and 640 of adults with age younger than 46 were the subjects. The parameters of their electrocardiogram and HRV, which includes SDNN, SDANN, SDNNlndex,, RMSSD, PNN50, were analyzed. Resuits： Incidences of myocardial injury, atrial fibrillation, premature beat, sinus arrhythmia and intraventricular block in the elderly were significantly higher than those in the young people. Means of SDNN, SDANN, RMSSD, and PNN50 were significantly lower than those in the young people except SDNN index. Conclusion： The degeneration changes of cardiac function occured with the age increasing . The elderly should check by electrocardicgram regularly in order to find the disorder at an early stage.