1000例活动平板运动试验引起心律失常的分析

An Analysis of Arrhythmia Induced by Treadmill Exercise Test in 1000 Cases

本文分析我院活动平板运动试验1 000例,心律失常发生率22.7%,性别间无明显差异,60岁以上随年龄增长其心律失常发生率随之增高。原有心律失常史,有高血压病、运动引起 ST 段下降≥0.2 mV 者异位搏动发生率明显增高,但运动引起异位搏动的严重程度和 ST 段下降的严重程度无明显相关关系。心律失常类型以室性异位搏动较房性异位搏动多见。运动引起交感神经张力增高,迷走神经机能降低和血循环中儿茶酚胺水平增高以及心率变化引起超速抑制是运动引起异位搏动的主要激发和调节因素。

This paper presents an analysis of arrhythmia induced by the treadmill exer-cise test in 1000 cases.The incidence of arrhythmia was 22.7%,with no significant differ-ence between male and female patients.It increased with age in patients aged over 60 years.The patients who had had history of arrhythmia,hypertension or exercise induced S-T seg-ment depression of more than 0.2 mV had higher incidence of arrhythmia,but the severityof ectopic impulse caused by exercise was not related to that of S-T segment depression.Itwas also found that ventrical arrhythmia was more common than atrial arrhythmia.Themechanisms for exercise-caused ectopic impulse may be an increase in the tension of sympa-thetic nerves,a decrease in the function of vagus nerves,an elevated level of catecholaminein the circulating blood and overdrive inhibition caused by a change in heart rate.