潘生丁负荷超声心动图评价心肌缺血

本文对１９例患者行低剂量及大剂量潘生丁负荷超声心动图检查，并与冠脉造影结果比较。患者均为男性，平均年龄５５±１２岁。临床考虑冠心病，包括１３例心梗患者，４例经ＰＴＣＡ治疗。结果发现６例负荷前后均无室壁运动异常，其中５例冠脉造影基本正常，１例有单支局部６５％的狭窄；另有６例静息时即有室壁运动异常，负荷后无变化；１例ＰＴＣＡ治疗者负荷后室壁运动有改善；６例负荷试验阳性，其中５例低剂量阳性者冠脉造影示多支病变重度狭窄，另１例在大剂量时阳性，冠脉造影虽为三支病变但最大狭窄程度为７５％。结论：潘生丁负荷试验简单实用，检测多支病变准确率高，还可帮助识别ＰＴＣＡ后血供的明显改善。低剂量阳性者提示多支病变、重度狭窄，可帮助筛选高危患者，判断预后

Myocardial Ischemia Evaluated by Dipyridamole Stress Echocardiography

Low dose and high dose dipyridamole stress echocardiography were performed and compared with the results of coronary angiography in 19 patients with chest pain,including 13 with OMI and 4 after PTCA.All patients were male,aged 55 in average.No abnormal wall motion was found in six patients both at rest and after stress:Angiography showed considerable coronary stenosis in one of these six patients.Rest abnormal wall motion was found in six patients but no change after stress.One patient after PTCA showed improvement of the abnormal wall motion after stress.Abnormal wall motion or deterioration of previous abnormal wall motion was reappeared in six after stress,five of whom at low dose and one at high dose.All those with positive result at low dose showed multiple and high degree vessel stenosis angiographically;while patients showed positive at high dose,although multiple vessel stenosis,but not substantial in angiography,Conclusion:Dipyridamole stress echocardiography is an easy practical for defect coronary ischemia,and helpful to identify the improvement of myocardial perfusion after revascularization.Dipyridamole stress echocardiography has a high accuracy in detecting multi vessel stenosis.Since patients with multi vessel and high degree stenosis are likely to be positive at low dose stress,so it is useful in the identification of high risk patients.