Abstract: Objective：To investigate the effect of endovascular repair on aortic remodeling and prometaphasesurvival in patients with complicated Stanford B aortic dissection.Methods：60 patients with Stanford B aortic dissection in our hospital from January 2012 to January 2016 were retrospectively analyzed.Then various indexes were compared between subacute group（n=23）and chronic group（n=37），including intraoperative bleeding volume，operation time，hospital stay length，and operation success rate，aortic remodeling indexes，postoperative complication rate，total survival rate.Results：The intraoperative bleeding volume，operation time，hospital stay length，operation success rate and postoperative complications were not statistically significant（P>0.05）.The Aortic remodeling index in the subacute group and the chronic group were not statistically significant（P<0.05）.The 3year cumulative survival rate of subacute group was higher than that of chronic group（P<0.05）.Conclusion：Endovascular repair can improve aortic remodeling in patients with complicated Stanford B，and the overall effect of subacute treatment is better.

Key words: stanford B aortic dissection, endovascular repair, aortic remodeling, prometaphase survival