主动脉夹层是指主动脉腔内血液经主动脉内膜撕裂处进入主动脉中膜,使内膜和中膜分离,并形成真、假两个通道,又称主动脉夹层动脉瘤。以往认为其发病率较低,但近年来发病率增高。多急剧发病,病死率较高。我们回顾分析2008年11月—2009年7月我院22例临床最后诊断为主动脉夹层的64 Aortic dissection refers to the aortic lumen into the aortic tunica intima tear, the separation of the intima and media, and the formation of true and false two channels, also known as aortic dissection aneurysm. In the past that its incidence is low, but the incidence in recent years increased. More rapid onset, higher mortality. We retrospective analysis of November 2008 -2009 in July in our hospital 22 cases of clinical diagnosis of aortic dissection 64