主动脉夹层(aortic dissection,AD)是指主动脉腔内的血液通过内膜的破口进入主动脉壁囊样变性的中层而形成夹层血肿,并沿着主动脉壁延伸剥离的严重心血管病变。在英美国家每年AD发病 Aortic dissection (aortic dissection, AD) refers to the aortic cavity blood through the intima break into the aortic wall cyst degeneration in the middle of the formation of dissection and dissection, and dissection along the aortic wall dissection of severe cardiovascular disease . AD in the United States and the United States each year the incidence