1临床资料患者男,74岁。主因发作性胸痛2年,再发加重4 h于2008-06-05来我院急诊,患者于当日凌晨4时无明显诱因出现胸痛,呈压榨感,伴大汗,并有黑朦,含服硝酸甘油缓解不明显,于上午8时来到急诊,测血压80/50 mmHg(1 mmHg=0·133 kPa),心率45次/m in,心电图示Ⅱ、Ⅲ、AVF,V7~V9导联 1 clinical data patient male, 74 years old. Mainly due to episodes of chest pain for 2 years, recurrence increased 4 h in 2008-06-05 to our hospital emergency, patients on the same day at 4:00 no obvious incentive chest pain, was squeezed feeling, with sweat, and darkness, with service Nitroglycerin was not significantly alleviated. At 8:00 a.m., emergency room visits were performed. Blood pressure was measured at 80/50 mmHg (1 mmHg = 0.133 kPa), heart rate 45 beats / min, electrocardiogram ECG II, III, AVF, V7 - V9