患者男,24岁。因持续胸闷9小时,加重3小时入院。患者12小时前突感胸闷,呈持续,入院前3小时症状加重,心前区疼痛伴出冷汗来院急诊,心电图提示急性下壁,正后壁心肌梗塞。否认其它病史。体检:一股情况尚可、伸志清楚,呼吸平稳,两肺呼吸音清晰,心界不扩 Patient male, 24 years old. Chest tightness due to sustained 9 hours, increased 3 hours admitted to hospital. Patient 12 hours ago suddenly felt chest tightness, was continued, 3 hours before admission symptoms increased, precordial pain accompanied by cold and sweat to hospital emergency, electrocardiogram prompted acute inferior wall, is posterior wall myocardial infarction. Denied other medical history. Physical examination: a situation is acceptable, Zhi Zhi clearly, breathing stable, clear breath sounds of both lungs, heart does not expand