Deformation of the Diastolic Left Ventricle

Evaluation of diastolic blood flow dynamic of the left ventricle in dogs with mitral valve regurgitation using vector flow mapping

Mitral valve regurgitation (MVR) is a common valvular disease in dogs. Hydrokinetic evaluation of the blood flow within the ventricles has become possible by vector flow mapping (VFM), which shows the blood flow within the ventricles in vector and vortex flows. Blood flow within the left ventricle of MVR dogs was compared at different stages of MVR and to that of normal dogs. 14 normal dogs and...

Left ventricle diastolic dysfunction and prognosis.

Normal LV diastolic function requires integration of left ventricular ejection, relaxation, and structure and is an active energy-requiring process.1 For example, LV diastolic function becomes markedly abnormal immediately following coronary ligation, before detectable changes in other measures of cardiac function, including wall motion or electrocardiographic S-T segment shifts.2 LV diastolic ...

Diastolic Bulging of the Interventricular Septum Toward the Left Ventricle

Diastolic bulging of the interventricular septum (IVS) toward the left ventricle was observed by real-time cross-sectional echocardiography in three patients with primary pulmonary hypertension and one patient with secondary pulmonary hypertension after closure of an atrial septal defect. M-mode echocardiography showed a characteristic abnormal pattern of septal motion in diastole and in systol...

Diastolic viscous properties of the intact canine left ventricle.

The viscoelastic model of the ventricle predicts that the rate of change of volume (strain rate) is a determinant of the instantaneous pressure in the ventricle during diastole. Because relaxation is not complete before the onset of filling, one cannot distinguish the individual effects of relaxation and viscosity unless the passive and active components that determine the ventricular pressure ...

Diastolic Function of the NonWing Human Left Ventricle