主动脉夹层(aortic dissection,AD)为心血管危重疾病,病情变化快,病死率高。由于本病少见,加之临床医生对本病认识不足,造成很高的误诊率,我院急诊科遇到的2例AD患者均误诊,现报告如下。1病例资料例1,男,63岁,2008年9月15日以胸、腹部不适0.5h入院。患者有原发性高血压病史8年, Aortic dissection (aortic dissection, AD) is a critical cardiovascular disease, the disease changes rapidly, high mortality. Due to the rare disease, combined with clinicians lack of knowledge of the disease, resulting in a high rate of misdiagnosis, emergency department encountered two cases of AD patients were misdiagnosed, are as follows. 1 case data example 1, male, 63 years old, September 15, 2008 to chest, abdominal discomfort 0.5h admission. Patients with a history of essential hypertension for 8 years,