The Role of Vortex Ring Formation and Pressure Drop on Dynamics of the Left Ventricle during Diastole
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چکیده
The role of vortex ring formation and pressure drop on dynamics of the left ventricle during diastole
منابع مشابه
Impact of disturbed diastolic vortex formation on viscous energy loss in the left ventricle: Quantitative 4D Flow MRI analysis of healthy controls and repaired atrioventricular septal defect patients
Background Vortex formation in the left ventricle (LV) is suggested to contribute to efficient blood pumping and minimization of energy loss. Patients after atrioventricular septal defect (AVSD) repair may present abnormalities in valve morphology and subsequently develop altered LV inflow patterns [1], in which normal vortex formation may be disturbed. This may lead to energy loss. We aimed to...
متن کاملThree dimensional right ventricular diastolic vortex rings: characterization and comparison with left ventricular diastolic vortex rings from 4D flow MRI
Background Efficient right ventricular (RV) pumping function requires optimal blood flow dynamics. In the left ventricle (LV), diastolic vortex ring formation distal to the mitral valve (MV) has been reported to be an important mechanism for such blood flow optimization. Earlier work based on computational fluid dynamics (CFD) simulations using simplified RV geometry modeling have reported vort...
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Normal left ventricular (LV) filling occurs rapidly early in diastole caused by a progressive pressure gradient within the ventricle and with a low left atrial pressure. This normal diastolic function is altered in patients with heart failure. Such impairment of diastolic filling is manifested as an abrupt deceleration of the early filling wave velocity. Although variations within the early fil...
متن کاملCorrelation between vortex ring formation and mitral annulus dynamics during ventricular rapid filling.
One of the most important fluid phenomena observed in the left ventricle during diastole is the presence of vortex rings that develop with a strong jet entering through the mitral valve. The present study is focused on the rapid filling phase of diastole, during which the left ventricle expands and receives blood through the fully open mitral valve. The atrioventricular system during the rapid ...
متن کاملDiastolic vortex ring formation in the human left ventricle: quantitative analysis using Lagrangian coherent structures and 4D cardiovascular magnetic resonance velocity mapping
Background The vortex ring formed in the left ventricle (LV) of the human heart during early diastolic inflow (corresponding to the Doppler E-wave) contains information about the normal and pathophysiologic aspects of diastole. Previous studies suggest that the volume of the vortex ring is an important characteristic of vortex ring formation. However, due to lack of quantitative methods, vortex...
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تاریخ انتشار 2006