平板运动试验中P波离散度的变化对冠心病患者的意义

Value of changes of P wave dispersion in patients with coronary artery disease during treadmill test

目的:探讨冠心病患者平板运动试验中P波离散度测定的意义。方法:分别测定并分析平板运动试验阳性组22例与阴性组25例冠心病患者运动前及运动中P波离散度。结果:运动前,两组患者P波离散度差异无统计学意义,其分别为(24±9)ms与(26±8)ms(P>0.05);运动中,阳性组P波离散度较运动前显著增加(P<0.05),而阴性组P波离散度较运动前无显著变化(P>0.05)。结论:P波离散度增加可作为评价冠心病患者平板运动试验中心肌缺血的临床指标。

Objective To evaluate the value of P wave dispersion measured in patients with eoronary artery disease during treadmill test. Methods Patients with eoronary artery disease reeeiving treadmill test were seleeted. P wave dispersion in 22 patients with positive result（positive group） and in 25 patients with negative result （negative group） were measured and P wave dispersion in two groups were analyzed before and during treadmill test. Results Before treadmill test, P wave dispersion had no significant difference in two groups, （24±9）ms and （26±8）ms respectively （P〉0.05）;during treadmill test, P wave dispersion in positive group increased obviously （P〈0. 05） ,and P wave dispersion in negative group did not ehange significantly eompared to before treadmill test（P〉0.05）. Conclusion The increase of P wave dispersion maybe a clinical reference for evaluating myocardial ischemia in patients with eoronary artery disease during treadmill test.