急性主动脉夹层起病急骤、发展迅速,是病死率最高的心血管疾病之一。国外文献报道发病率约为25～30/百万。随着我国高血压和动脉粥样硬化发病率的增加,发病率呈上升趋势。由于累及分支 Acute dissection acute onset, rapid development, is one of the highest mortality of cardiovascular disease. Foreign literature the incidence of about 25 ~ 30 / million. With the increase of incidence of hypertension and atherosclerosis in our country, the incidence is on the rise. Due to the involvement of the branch