主动脉夹层(aortic dissection,AD)指主动脉腔内血液从主动脉内膜撕裂口处进入主动脉中膜使其分离,沿长轴剥离延展继而形成真腔与假腔,并出现两腔分离的一种病理改变,可通过一或数个破口与主动脉真腔相交通,因通常继发瘤样改变又称主动脉夹层动脉瘤。本病欧美发病率为5/100万~10/100万,65%~70%在急性期死于心包填塞、心律失常等。发 Aortic dissection (aortic dissection, AD) refers to the aortic cavity blood from the aortic intimal tear into the aortic dissection to separate, along the long axis of the peel and then extend to form a true cavity and false lumen, and the emergence of two chambers A pathological change that separates from the true lumen of the aorta through one or more breaches, also known as aortic dissection, usually secondary to tumor-like changes. The incidence of the disease in Europe and America 5/100 million ~ 10/100 million, 65% to 70% died of acute cardiac tamponade, arrhythmia and so on. hair