Abstract
We performed thoracic endovascular aortic repair（TEVAR）for 33 type B aortic dissection at our institution from April 2011 to August 2019. The average age was 71 years old, and there were 21 men and 12 women. The average interval of aortic dissection onset to TEVAR was 1,500 days（0-7,944 days） . We divided them into two groups of the E group within six months（17 cases）and the L group more than six months（16 cases）as for an interval of aortic dissection onset to TEVAR. There were two hospital death, three cerebral infarction and one paraparesis. There was no aorta-related death of the E group at remote period, and aorta-related death free rate of the L group was good with 94% at five years. Reintervention free rate at five years was 68% in the E group and 31% in the L group. The pre- and postoperative aortic maximum diameter（average）reduced from 49.7mm to 42.6mm in the E group, but enlarged it from 58.9mm to 61.7mm in the L group. The shrinkage and disappearance of false lumen was significantly provided in the E group than in the L group. The strict follow-up and various kinds of additional procedures were necessary in the cases that false lumen was not thrombosed completely and dilated after the closure of primary entry with TEVAR for double barrel type of chronic aortic dissection.
