516 僧帽弁の開口部形状が左心室拡張時の心室内流れに与える影響

概要

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CFD of intraventricular diastolic flow was carried out to study the effects of the shape of the mitral valve orifice during its opening. The results showed that intraventricular blood flow, especially a shape of vortex ring, was changed when different opening mode of the mitral valve orifice was used. A change in blood flow was reflected in a shape of the aliasing area appearing in Color M-mode Doppler (CMD) echocardiograms. Based on the results, we discussed the applicability of CMD echocardiography for detecting mitral valve disorders that involves a change in the shape of the mitral valve orifice. From discussions on fluidic advantages of the formation of intraventricular diastolic vortex, it is suggested that a shape of the valve orifice should be optimized when designing artificial heart valves.
社団法人日本機械学会の論文
2003-08-05