[automatically translated] The present work aims to study the hemodynamic differences and loads of wall that develop in patients with ascending aortic aneurysm thoracic (ATAA) with different morphology of the aortic valve. They identified 5 patients with ATAA underwent CT scanning to control the diameter of the aneurysm at the Mediterranean Institute for Transplantation and Advanced Specialized Therapies. In particular, three patients have type tricuspid aortic valve (TAV) and two types of bicuspid aortic valve (BAV) usually associated with the formation of ATAA. the geometries of ATAA also including the reconstruction of the aortic valves have been rebuilt. They were performed of fluid flow analysis in Fluent / Ansys and subsequently were extracted hemodynamic markers such as the lines of flux, the wall shear stress (WSS) and its oscillation (OSI) on the aortic wall. The results showed that the BAV ATAA show a blood flow of the helical type and left-handed with peripheral velocities and vortices in the central stretch. Differently, TAV ATAA showed a minimal deviation of flow through the aorta. BAV ATAA also appear to show a WSS lower and higher than the OSI TAV ATAA. In conclusion, this study shows that patients with BAV have aneurysm hemodynamics disorders that are caused by the pathological features of the bicuspid valve.
|Number of pages||9|
|Publication status||Published - 2013|