Clinical evaluation of right ventricular function in patients with left ventricular assist device (LVAD).
Right ventricular function (RVF) during LVAD support can be a threat for patient survival. Despite extensive research, RVF and its interference with left heart function is unclear. This study examines RVF in a retrospective analysis of 14 patients. Hemodynamic data were collected, including heart rate (HR), central venous pressure (CVP), mean pulmonary artery pressure (mPAP), total cardiac output (CO), calculated stroke volume index (SVI) and right ventricular stroke work index (RVSWI). In all patients, CO increased gradually throughout the study period; CVP showed no significant decrease; mPAP and PCWP decreased significantly over the time period; SVI improved and RVSWI increased from the starting level prior to implantation of the LVAD. We conclude that the CO improved with a lowering of the right ventricular afterload combined with a decrease in total circulating volume. The improvement of RVF with LV assist makes this device an option as a bridge to transplant.
Bennink
G B
GB
Division of Cardiovascular Surgery, Texas Heart Institute, Houston.
Noda
H
H
Duncan
J M
JM
Frazier
O H
OH
D001794:Blood Pressure; D002302:Cardiac Output; D005260:Female; D006333:Heart Failure / Q000628:therapy*; D006339:Heart Rate; D006353:Heart-Assist Devices; D006801:Humans; D008297:Male; D016278:Ventricular Function, Right