Surgical Strategy for Aortic Arch Reconstruction after Norwood Procedure based on a Virtual Operation with Numerical Flow Analysis

2015 Fiscal Year Final Research Report

• Project/Area Number: 25462145
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Cardiovascular surgery
• Research Institution: Wakayama Medical University (2015); Kitasato University (2013)
• Principal Investigator: Oka Norihiko 和歌山県立医科大学, 医学部, 講師 (20328420)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 血流解析

Outline of Final Research Achievements

In the first year, using vector flow mapping (VFM) based on echocardiography, the flow in a reconstructed aortic arch after Norwood operation was analyzed as a pilot data. We validated that the result of VFM analysis was compatible with that of computational fluid dynamics (CFD). In the second year, we validated the reliability of VFM analysis by comparing the date with 4DMRI analysis. Further data accumulation was achieved and reached up to 24 cases in this year. By analyzing the data, we found that the reconstructed aortic arch with more than 70 Pascal of shear stress would affect patients’ cardiac function and requires reoperation. In the third year, we confirmed that the reoperation for the aortic arch with more than 70 of shear stress Pascal certainly reduces energy loss that may improve the patients’ cardiac function in a long term.

Free Research Field

心臓血管外科