在美国,每年200多万例患者临床拟诊为急性心梗入院,然而>70％患者并无心脏事件。非连续的93例低危患者从急诊室转入病房,立即(中位时间<1小时)进行改良的Bruce方案平板试验,以期排除急性心梗。12例运动试验阳性,造影显示其中6例冠状动脉明显狭窄。1例无并发症的患者诊断为 In the United States, more than 2 million patients are clinically diagnosed as having acute myocardial infarction per year, whereas> 70% have no cardiac event. A total of 93 consecutive low-risk patients were transferred to the ward from the emergency room and an immediate (median> 1 hour) modified Bruce regimen was used to rule out acute MI. 12 cases of motor test was positive, angiography showed that 6 cases of coronary artery stenosis. One patient without complications was diagnosed