Abstract
Computer model results are reported for the diastolic behavior of blood flow and muscle stress in the left ventricle of the heart. Comparisons are made between results for a rigid-leaflet mitral valve and a caged-ball prosthetic valve. As expected, the model ball valve produces larger pressure drops, a higher wall shear, and slower opening times. In addition, the ball valve creates an abnormal distension of the heart wall. This may affect the long-term behavior of the muscle, particularly during systolic contraction.
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