A fluid-dynamic analysis of stenosis and regurgitation in polyurethane tricuspid valves

The quantitative evaluation of regurgitation and stenosis was studied in in vitro experiments using polyurethane tricuspid valves from the fluid-dynamic point of view. It is likely that the cross-sectional area of a leaflet defect in a polyurethane tricuspid valve changes easily as temperature rises. Our results clearly demonstrate that the fDAR (functional defect area ratio) of aortic regurgitation models and the fSAR (functional stenosis area ratio) of aortic stenosis models can be estimated