小剂量多巴酚丁胺负荷超声心动图预测存活心肌的临床研究

目的 探讨小剂量多巴酚丁胺负荷超声心动图（ＬＤＤＳＥ）预测存活心肌的价值及评价存活心肌的预后状况。方法 ３０例冠心病患者均行经皮腔内冠状动脉成形术（ＰＴＣＡ）或ＰＴＣＡ＋支架术，术前１周内及术后（〉６周）用ＬＤＤＳＥ观察室壁运动情况。结果ＬＤＤＳＥ预测心肌运动严重减弱节段血运重建后功能恢复的敏感性、特异性分别为７２．７％和９２．０％，预测无运动节段心肌恢复的敏感性、特异性分别为７３．９％、７９．

The value of low-dose dobutamine stress echocardiography in detecting survived myocardium

Objective To detect survived myocardium by low-dose dobutamine stress echocardiography (LDDSE)and evaluate the prognosis of survived myocardium.Methods Thirty patients with coronary heart disease underwent Dercutaneous transluminal coronary angioplasty(PTCA)or PTCA plus stent.LDDSE was used to detect wall motion before and after operation.Results Sensitivity and specificity of detecting survived myocardium were 72.7% and 92.0%in hypokinesic segments,73.9%and 79.5%in akinesic segments,and 80.0%and 90.0%in dyskinesic segments respectively.The cardiac function was impoved significantly in patients with a biphasic response and a worsenjng resporlse during LDDSE after revascularization.Conclusion LDDSE is a safe and accurate method for predicting survived myocardium and its reversibility after revascularization.