CAJ | 학술논문

目的探讨活动平板运动试验QT问期离散度在冠心病诊断及预测心血管事件中的意义.方法与冠脉造影结果对比,观察93例患者活动平板运动试验QT间期离散度的变化,比较不同程度冠脉病变之间QT间期离散度的差异,分析室性心律失常的发生率.结果冠心病组的QT间期离散度高于非冠心病组,差异具有统计学意义(P＜0.05)；随着病变程度的增加,QT间期离散度也随之增大,差异有统计学意义(P＜0.05)；冠心病组室性心律失常的发生率为26.9％,而非冠心病组患者室性心律失常的发生率为7.69％.结论 QT间期离散度可作为活动平板运动试验诊断冠心病的指标之一,QT间期离散度的变化与冠脉病变程度呈正相关,并提示室性心律失常的发生与QT间期离散度的增大相关,在预测心血管事件中具有一定的意义.
목적 탐토활동평판운동시험QT문기리산도재관심병진단급예측심혈관사건중적의의.방법 여관맥조영결과대비,관찰93례환자활동평판운동시험QT간기리산도적변화,비교불동정도관맥병변지간QT간기리산도적차이,분석실성심률실상적발생솔.결과 관심병조적QT간기리산도고우비관심병조,차이구유통계학의의(P＜0.05)；수착병변정도적증가,QT간기리산도야수지증대,차이유통계학의의(P＜0.05)；관심병조실성심률실상적발생솔위26.9％,이비관심병조환자실성심률실상적발생솔위7.69％.결론 QT간기리산도가작위활동평판운동시험진단관심병적지표지일,QT간기리산도적변화여관맥병변정도정정상관,병제시실성심률실상적발생여QT간기리산도적증대상관,재예측심혈관사건중구유일정적의의.
Objective To investigate the significance of QT dispersion changes after exercise treadmill in diagnosing of coronary heart disease (CHD) and predicting cardiovascular events.Methods QT dispersion changes of 93 patients who had finished exercise treadmill testing was observed and compared with the results of coronary angiography.The differences of QT dispersion were compared between different degrees of coronary artery disease.The incidence of ventricular arrhythmias was analyzed.Results The QT dispersion was higher in the CHD group than in the non-CHD group,with a statistical difference(P ＜ 0.05).QT dispersion increased with the severity of coronary artery disease,with statistical difference(P ＜ 0.05).The incidence of ventricular arrhythmias was 26.9％ in the CHD group and was 7.69％ in the non-CHD group.Conclusions QT dispersion can be an indicator for diagnosing coronary heart disease by treadmill exercise testing.QT dispersion changes positively correlate with the severity of coronary artery disease.The occurrence of ventricular arrhythmias correlate with the increase of QT dispersion.QT dispersion can be used in predicting cardiovascular events.