患者女，７２岁，既往体健。近７天来反复发作性胸痛、胸闷、与活动关系不甚，每次发作 ５－ １０ｍｉｎ，未行特别诊治。入院前６０ｍｉｎ始感胸癌症状加重伴大汗，急诊入院，心电图示房室分离、室性自搏节律，２５次／ｍｉｎ，血压测不清，先后３次静推阿托品，每次０．５ｍ Female patient, 72 years old, past physical health. Repeated episodes of chest pain in the past 7 days, chest tightness, and the activities of the less well, each episode 5- 10min, no special diagnosis and treatment. 60min before admission, feeling chest symptoms increased with sweating, emergency admission, ECG atrioventricular separation, ventricular spontaneous rhythms, 25 beats / min, blood pressure measured unclear, has 3 times quietly push atropine, each 0.5m