Lin CY, Tung TH, Wu MY, et al. - DeBakey type I (D1) acute aortic dissection (AAD) is associated with a higher risk of in-hospital mortality than DeBakey type II (D2) AAD, although comparable 5-year survival rates were reported for patients who survived to discharge.

• For 599 patients who had aortic repair for Stanford acute type A aortic dissection, 543 and 56 patients were divided as the D1 and D2 groups, respectively.

• A matched cohort of 56 patients per group was created.

• A lower rate of preoperative shock and more aortic arch replacement with longer cardiopulmonary bypass time was noted in the D1 group in the overall cohort.

• A lower 5-year freedom from aortic reoperation rate was noted in D1 group vs D2 group in the overall cohort but similar rates were observed after propensity-matching.