Modeling left ventricular dynamics with characteristic deformation modes

Simulation of Characteristic of Linear Degradation with Failure Modes

Dynamics of Left Ventricular Ejection

This paper was presented in part to the 50th Annuial Scientific Sessions, Americani Heart Association, Miami, Fla., Noveml)er 1977. The opinions or assertions expressed herein are the private views of the authors and are not to be construed as reflecting the views of the Department of the Army of the Department of Defense. Received for publicatiotn 6 April 1979 anid inl revised formt 7 July 198...

Left ventricular dynamics during handgrip.

The effect of isometric exercise by handgrip on the ejection dynamics of the left ventricle, especially the relation between left ventricular stroke work index and end-diastolic pressure, was studied in 25 patients. In the patients with normal or nearly normal left hearts (group i), the response to handgrip was characterized by a significant increase of left ventricular stroke work index at an ...

VENTRICULAR PERFORMANCE Left ventricular filling dynamics : influence of left ventricular relaxation and left atrial pressure

Peak rapid filling rate (PRFR) is often used clinically as an index of left ventricular relaxation, i.e., of early diastolic function. This study tests the hypothesis that early filling rate is a function of the atrioventricular pressure difference and hence is influenced by the left atrial pressure as well as by the rate of left ventricular relaxation. As indexes, we chose the left atrial pres...

Physical and geometrical modeling for image-based recovery of left ventricular deformation.

Information about left ventricular (LV) mechanical performance is of critical importance in understanding the etiology of ischemic heart disease. Regional measurements derived from non-invasive imaging to assist in assessing this performance have been in use for decades, and certain parameters derived from these measurements often are useful clinically, as they correlate to some extent with gro...