目的:探讨胸骨上段小切口行去分支手术治疗累及弓部的B型主动脉夹层的安全性及近中期疗效。方法:选择2017年11月至2019年1月收治18例累及弓部的B型主动脉夹层患者，评价术中及术后的情况，包括术中特殊处理方式、手术时间、术后胸腔引流量、呼吸机使用时间、ICU滞留时间、并发症及术后进行12～24个月随访资料。结果:全组无死亡病例，住院期间发生急性肾功能衰竭1例，Ⅰ型内漏1例，截瘫1例，1例患者出院后30天突发呕血，发现主动脉食管瘘，急诊行胸主动脉替换术并食管瘘修补术，均治愈出院，并发症发生率22.2%(4/18)。余患者无逆撕、远端破裂、支架扭曲移位、冠状动脉缺血、脑血管意外等情况。结论:胸骨上段小切口行去分支手术治疗累及弓部的B型主动脉夹层效果满意，明显提高了患者的近、中期生存率，改善患者预后。“,”Objective:To investigate the safety and early and mid-term efficacy of upper sternal mini-incision with debranching technique in B aortic dissection involving the arch.Methods:18 patients with B aortic dissection involving the arch who were admitted into our center from November 2017 to January 2019 were enrolled, to evaluate the intraoperative and postoperative conditions, including special intraoperative treatment, time of operation、poseoperative drainage、time of use ventilators, time of staying in ICU, complications etc, 12-24 months follow-up were performed after operation.Results:No death occurred, 1 case with acute renal failure, 1 case with type I endoleak, 1 case with paraplegia occurred during hospitalization, 1 patient with sudden vomiting of blood 30 days after discharge from hospital who was found aortoesophageal fistula, underwent emergency surgery to replace thoracic aortic and repair esophageal fistula, all of them were cured and discharged, the rate of complication was 22.2%(4/18). none of the other patients had any phenomena such as agnail、distal rupture、twisted or displaced of the stents、ischemic of coronary artery、cerebrovascular accident, etc.Conclusion:The result of upper sternal mini-incision with debranching technique in B aortic dissection involving the arch is satisfied, the early and mid-term survival rate is significantly improved, the patient's prognosis are improved.