How to select the optimal size of frozen elephant trunk in total arch replacement for type A acute aortic dissection.

Background: Total arch replacement (TAR) with a frozen elephant trunk (FET) is a common technique for acute aortic dissection, but there is no consensus on the optimal size of the FET.

Methods: Forty-four patients who underwent TAR with FET for acute aortic dissection at our hospital since 2014 were included. The aortic diameter obtained from FET was measured on postoperative computed tomography (CT) and the estimated oversizing ratio was calculated.