Hemodynamic analysis of surgical correction for patient-specific aortic coarctation with aortic arch hypoplasia by end-to-side anastomosis

Coarctation of the Aorta (CoA) is one of the most serious congenital heart defects in newborns. Approximately 30% of cases of CoA associated with aortic arch hypoplasia (AAH). The end-to-side aortic anastomosis (ESAA) is an effective surgical procedure to be performed for correction of CoA with AAH. In this study, the approach of computational fluid dynamics (CFD) was used to investigate the hemodynamics in patient-specific models of CoA with aortic arch hypoplasia before and after the procedure of ESAA. The results showed that the pressure drop and energy loss (EL) were significantly decreased after the surgical correction was done. Uniformed velocity profile and blood flow distribution were surgically created for patient's recovery of cardiac function. The approach of CFD can be used to disclose and evaluate the hemodynamics of CoA and its correction procedure.