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主动脉夹层指主动脉腔内的血液通过内膜的破口进入主动脉壁中层而形成的血肿,依据夹层累及范围可分为A型和B型主动脉夹层。其中A型主动脉夹层需尽快手术治疗,而B型主动脉夹层患者可行手术治疗,也可行介入治疗以及保守治疗,B型主动脉夹层手术方式主要为胸腹主动脉置换[1-3]。既往所采用的深低温停循环下胸腹主动脉置换术体外循环时间长,输血量大,致患者术后脑部及肺部并发症发生率高。应用常温血
Aortic dissection refers to the blood in the aortic lumen through the intima break into the middle of the aortic wall and the formation of hematoma, according to the scope of dissection can be divided into type A and type B aortic dissection. A type of aortic dissection need surgery as soon as possible, and B type aortic dissection in patients with surgical treatment, but also feasible interventional therapy and conservative treatment, B-type aortic dissection mainly abdominal aortic replacement [1-3]. Previously used deep hypothermic circulatory arrest under the abdominal aorta replacement cardiopulmonary bypass a long time, the volume of blood transfusion, resulting in patients with high incidence of brain and lung complications. Apply normal temperature blood