Journal
ANNALS OF BIOMEDICAL ENGINEERING
Volume 38, Issue 3, Pages 769-773Publisher
SPRINGER
DOI: 10.1007/s10439-010-9928-2
Keywords
Cardiac fluid dynamics; Vortex dynamics; Left ventricular flow
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The blood flow in the human left ventricle is known to develop a vortical motion that should facilitate the ejection of blood into the primary circulation. This study shows that such a rotary motion can be totally reversed after the implant of a prosthetic valve. This phenomenon, in agreement with clinical observation, appears mostly imputable to the symmetry of the implant. The reversed rotation increases energy dissipation and modifies the pressure distribution with the potential development of new pathologies. The results provide preliminary, physically based, elements for the improvement of surgical procedures or prosthesis.
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