Right Ventricular Performance and Left Ventricular Assist Device Filling William A Mandarino, MSME, Stephen Winowich, BSChE, John Gorcsan, MD, Thomas A Gasior, MD, Si M Pham, MD, Bartley P Griffith, MD, Robert L Kormos, MD The Annals of Thoracic Surgery Volume 63, Issue 4, Pages 1044-1049 (April 1997) DOI: 10.1016/S0003-4975(97)00062-3
Fig. 1 Example of waveform data during inferior vena cava (IVC) occlusion from 1 patient with a left ventricular assist device (LVAD). The electrocardiogram, right ventricular (RV) pressure, RV area, first derivative of RV area (dA/dt), LVAD volume, and first derivative of LVAD volume (dV/dt) (ie, LVAD filling) are shown. The Annals of Thoracic Surgery 1997 63, 1044-1049DOI: (10.1016/S0003-4975(97)00062-3)
Fig. 2 Superimposed left ventricular assist device (LVAD) filling profiles from several cardiac cycles from 1 patient during inferior vena cava occlusion. (dV/dt = first derivative of LVAD volume, ie, LVAD filling.) The Annals of Thoracic Surgery 1997 63, 1044-1049DOI: (10.1016/S0003-4975(97)00062-3)
Fig. 3 Right ventricular (RV) pressure–area loops generated during inferior vena cava occlusion from a representative patient. The Annals of Thoracic Surgery 1997 63, 1044-1049DOI: (10.1016/S0003-4975(97)00062-3)
Fig. 4 Linear regression plots from 1 patient showing left ventricular assist device (LVAD) filling rate versus (A) right ventricular (RV) stroke area, (B) RV peak ejection rate, and (C) RV stroke work. The Annals of Thoracic Surgery 1997 63, 1044-1049DOI: (10.1016/S0003-4975(97)00062-3)
Fig. 5 Correlation between (A) baseline left ventricular assist device (LVAD) peak filling rate and right ventricular (RV) peak ejection rate and (B) LVAD mean filling rate and RV stroke work for 10 patients. The Annals of Thoracic Surgery 1997 63, 1044-1049DOI: (10.1016/S0003-4975(97)00062-3)