主动脉弓三分支覆膜支架在Stanford A型急性主动脉夹层外科治疗中的应用

目的 总结外科处理升主动脉加主动脉弓三分支覆膜支架置入治疗Stanford A型急性主动脉夹层的临床经验.方法 对2010年1月至12月收治的14例Stanford A型主动脉夹层患者行升主动脉手术处理加主动脉弓三分支覆膜支架置入,其中男性12例,女性2例,年龄20～70岁,平均49岁.手术包括升主动脉置换术加支架置入4例,主动脉根部置换术(Bentall术)加支架置入5例,主动脉瓣置换加升主动脉置换术(Wheat术)加支架置入4例,主动脉瓣成形加升主动脉置换术加支架置入1例;其中6例为急诊手术.结果 平均心肺转流时间(186±38)min,心肌阻断时间(101±27)min,选择性脑灌注时间(39±11)min.无住院死亡病例;术后出现短暂性神志障碍1例,肢体活动障碍1例,急性肾功能衰竭1例,二次开胸手术1例,消化道出血1例,乳糜胸1例,治疗后均痊愈.出院前及出院后3个月内行大血管CT血管造影检查:升主动脉及弓部覆膜支架内血流通畅,主动脉弓段及降主动脉假腔缩小,主动脉管壁结构恢复.随访1～12个月,无晚期死亡及需要再次手术纠治血管病变者.结论 主动脉弓三分支覆膜支架置入的主要适应证为内膜破口位于升主动脉但需重建弓部形态的Stanford A型急性主动脉夹层.其同期结合手术处理升主动脉是治疗急性Stanford A型主动脉夹层安全、有效的一种新手段.

Abstract：

Objective To sum up the experience of performing ascending aorta replacement combined triple-branched stent graft implantation for acute Standford type A aortic dissection. Methods From January 2010 to December 2010, 14 patients with acute Standford type A aortic dissection underwent the procedure of performing ascending aorta replacement combined triple-branched stent graft implantation.Right axiuary artery cannulation was used for cardiopulmonary bypass and selected cerebral perfusion.When the body temperature drops below 18 ℃, the ascending aorta was transected near the base of the innominate artery.From the incision, the triple-branched stent graft was implantated into the true lumen of the arch,descending aorta and the aorta bifurcation vessel. The transected stump of the ascending aorta was anastomosis to the proximal of the branched blood vessel prosthesis.Results Cardiopulmonary bypass time was (186 ±38) min,cross clamp time was (101 ±27) min,and average selective cerebral perfusion and lower body arrest time was ( 39 ± 11 ) min.The in-hospital mortality was zero.One patient of transient postoperative neurologic dysfunction, one of acute renal failure, one of transient limbs disturbance, one of secondary thoracotomy operation, one of gastrointestinal hemorrhage and one of postoperative chylothorax were observed.CT angiography rechecked showed the position of the vascular stent were satisfactory and the blood flow of arterial branches stents were lucid .The false lumen of the aortic arch and descending aorta closed with thrombus or shrinked.Conclusions The patients required aortic arch to be reconstructed which had no main tearing of intima in the arch may be best candidates for this technique.Open triple-branched stent graft placement combined ascending aorta replacement is an effective means for aortic arch reconstruction in acute Stanford type A aortic dissection.

The application of triple branches aortic arch stent-graft placement in the surgical treatment of acute Stanford type A aortic dissection

Objective To sum up the experience of performing ascending aorta replacement combined triple-branched stent graft implantation for acute Standford type A aortic dissection. Methods From January 2010 to December 2010, 14 patients with acute Standford type A aortic dissection underwent the procedure of performing ascending aorta replacement combined triple-branched stent graft implantation.Right axiuary artery cannulation was used for cardiopulmonary bypass and selected cerebral perfusion.When the body temperature drops below 18 ℃, the ascending aorta was transected near the base of the innominate artery.From the incision, the triple-branched stent graft was implantated into the true lumen of the arch,descending aorta and the aorta bifurcation vessel. The transected stump of the ascending aorta was anastomosis to the proximal of the branched blood vessel prosthesis.Results Cardiopulmonary bypass time was (186 ±38) min,cross clamp time was (101 ±27) min,and average selective cerebral perfusion and lower body arrest time was ( 39 ± 11 ) min.The in-hospital mortality was zero.One patient of transient postoperative neurologic dysfunction, one of acute renal failure, one of transient limbs disturbance, one of secondary thoracotomy operation, one of gastrointestinal hemorrhage and one of postoperative chylothorax were observed.CT angiography rechecked showed the position of the vascular stent were satisfactory and the blood flow of arterial branches stents were lucid .The false lumen of the aortic arch and descending aorta closed with thrombus or shrinked.Conclusions The patients required aortic arch to be reconstructed which had no main tearing of intima in the arch may be best candidates for this technique.Open triple-branched stent graft placement combined ascending aorta replacement is an effective means for aortic arch reconstruction in acute Stanford type A aortic dissection.