A fluid-structure interaction model can successfully simulate and predict the complex hemodynamics and leaflet dynamics of bileaflet mechanical heart valves, which may help in understanding complications like hemolysis and platelet activation.
Answers are grounded in this paper and cite their sources.
FSI modeling of BMHV dynamics succeeds in animals; leaves open human validation before informing valve design or complication risk.
Bileaflet mechanical heart valves (BMHVs) are widely implanted to replace diseased heart valves but still suffer from complications such as hemolysis and platelet activation. These complications are closely related to both flow characteristics through the valves and leaflet dynamics. In this study, a fluid-structure interaction (FSI) simulation is performed to investigate the characteristics of physiological flow interacting with moving leaflets in a BMHV. The present FSI model uses both a finite volume computational fluid dynamics code and a finite element structure dynamics code to solve the governing equations for fluid flow and leaflet dynamics. In addition, a structural analysis is performed with the forces acting on the leaflet surfaces. From the analysis, detailed flow information and leaflet behavior are quantified for a cardiac cycle. The results show that the present FSI model performs well at predicting the overall flow patterns interacting with the moving leaflets and leaflet behavior in the BMHV.
No takes yet. Share an insight, caveat, or question.
Choi et al. (2009) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: