心电图多巴酚丁胺试验评价心肌存活性的初步探讨

Evaluation of myocardial viability after cardiac infarction by ECG dobutamine test

目的 :探讨心电图多巴酚丁胺试验检测冠心病心肌梗塞后心肌存活性的临床价值。方法 :2 0例急性心肌梗塞患者于病程的第 3～ 4周做超声心动图及心电图的多巴酚丁胺试验。结果 :超声心动图多巴酚丁胺试验诊断心肌存活阳性的有 8例 ,其中病理性Q波相关导联上S T段抬高的 5例 ,占 6 2 .5 % ;12例阴性中S T段抬高的 2例 ,占 16 .7% ,二者相比差异显著 (P <0 .0 5 ) ,而QS波及T波的变化在二者中无显著差异 (P均>0 .0 5 )。结论 :心电图多巴酚丁胺试验导致的病理性Q波相关导联上S

Objective:To evaluate the relationship between ECG dobutamine test and myocardial viability after cardiac infarction.Method:Dobutamine test via echocardiogram and ECG was conducted in 20 cardiac infarction patients three to four weeks after the onset.Result:Among eight cases of positive myocardial viability diagnosed by echocardiogram dobutamine test,five(62.5%)with ST segment elevation in the leads with pathological Q wave.ST segment elevation was found in only two of twelve patients of negative myocardial viability(P<0.05).As to the variation of QS and T wave,no difference was found (P>0.05).Conclusion:ST segment elevation found in the leads with dobutamine induced pathological Q wave was a mark of myocardial viability after cardiac infarction.