Two-Dimensional Computational Simulation of Bypassed Aortic Dissection with a Blind False Lumen

In order to investigate the validity of bypassing treatment for aortic dissection, two-dimensional idealized geometry models of DeBakey III aortic dissection and its bypassing treatment were constructed. Computational simulations of physiological blood flow in these models were performed with the software of ANSYS using finite element method. After bypassing treatment, the blood flow velocity and the pressure in the false lumen of aortic dissection are both less than those before the operation. Bypassing can effectively reduce the pressure of aortic arch and ease the impulsion and stress of blood flow on the pathological dissection. Bypassing is a prospective surgical approach for the treatment of DeBakey III aortic dissection.