Abstract:Objective To investigate the effect of aortic adventitia varus technique in root surgical treatment of patients with acute type A aortic dissection (ATAAD). Methods The clinical data of 82 patients with ATAAD diagnosed and treated with ascending aorta replacement + total arch replacement + elephant trunk stent implantation in the First Affiliated Hospital of Xi’an Jiaotong University from October 2019 to September 2020 were analyzed retrospectively. According to different treatment methods of aortic root, they were divided into group A (experimental group, n=37, aortic root was treated with aortic adventitia varus technique) and group B (control group, n=45, the aortic root was treated with conventional continuous suture and intermittent mattress suture reinforcement with gasket, and wrapped with its own vascular adventitia or bovine pericardium, the ascending aorta-right atrial shunt was performed after wrapping if necessary). The postoperative clinical outcomes of the two groups were analyzed and compared. Results There was no significant difference in postoperative mortality, CRRT use rate and incidence of hypoxemia between the two groups (P>0.05). However, the intraoperative cardiopulmonary bypass time and aortic occlusion time in group A were significantly shorter than those in group B (P<0.01). The perioperative erythrocyte infusion volume, postoperative mechanical ventilation time, ICU stay time and total hospital stay in group A were less than those in group B (P<0.05). Conclusion The application of aortic adventitia varus technique in aortic root treatment of ATAAD patients is safe and effective, and can obtain satisfactory curative effect.