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Abstract #2848

Evaluation of three-dimensional flow characteristics behind the prosthetic mechanical valve under subvalvular pannus formation; in-vitro 4D flow MRI

Hyung Kyu Huh1, Hojin Ha1, Sang Joon Lee1, Namkug Kim2,3, and Donghyun Yang3

1Mechanical Engineering, POSTECH, Pohang, Korea, Republic of, 2Department of Convergence Medicine, Asan Medical Center, 3Department of Radiology, Asan Medical Center

A pannus formation is a growth of abnormal tissues around the heart valve, which is often found in patients whom underwent heart valve replacement surgery. Significant hemodynamic changes caused by the formation of the pannus may contribute to the failure of the valves even without direct contact to the leaflets. In current study, flow in the sinus if Valsalva under subvalvular pannus formation was analyzed using in vitro phantom and 4D flow MRI. Symmetric pannus causes imperfect opening the valve, which might lead to the heart failure.

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