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心血管负荷试验常用于诊断隐性冠心病,决定心梗预后及冠心病患者危险性。有关平板试验的局限性早有报道,铊心肌显像、同位素心室造影和二维超声心动图负荷试验大大提高了平板试验的敏感性和特异性。但以往对不能运动的患者,多采用扩血管的潘生丁或腺嘌呤核苷铊心肌显像这一方法,本实验则应用既影响心肌收缩速率又影响心肌收缩力的多巴酚丁胺对已知或疑似冠心病患者行超声心动图负荷试验。方法研究对象为Michigan大学1990年1月至1991年5月间568例行DSE检查并在二个月内做过心导管冠状动脉造影的141
Cardiovascular stress test commonly used in the diagnosis of recessive coronary heart disease, determine the prognosis of myocardial infarction and coronary heart disease risk. The limitations of the plate test have long been reported, thallium myocardial imaging, isotope ventriculography and two-dimensional echocardiography load test greatly increased the sensitivity and specificity of the plate test. But in the past for patients who can not exercise, the use of vasodilator dipyridamole or adenosine thaliana myocardial imaging this method, the application of this experiment is not only affect the rate of myocardial contraction and myocardial contractility dobutamine to known Or suspected coronary heart disease patients undergoing echocardiographic stress test. Methods The study included 568 routine DSE examinations performed by the University of Michigan between January 1990 and May 1991 and catheterized coronary angiography within two months