251例冠心病病人踏车运动试验前后QTc分析

ANALYSIS OF QTC INTERVALS IN 251 CORONART HEART DISEASE(CHD)PATIENTS BEFORE AND AFTER EXERCISE TEST

分析251例冠心病人踏车运动试验前后 QTc 的变化,与50例正常人进行对照,发现运动后即刻 QTc≥0.43秒者在心绞痛组为45%,心肌梗塞组为60%,正常人组为4%。对60例心肌梗塞病人进行随访,发现心脏意外的发生率同 QTc 延长有关,而与 ST 段缺血型降低无关。

The authors analysed the QTC changes in 251 CHD patients before and after exercise test,and compared the results with those of the control group consisting of so normal persons.They found that those (whose QTC intervals≥0.34 second immediately appeared after the test)accounted for 45% of the angina pectoris group;and 4% of the control group. The follow-up of 60 MI patients showed that the morbidity of cardiac accident was related to the QTC.interval prolongation,but not to the ischemic depression of ST segment.