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Table 2 Diastolic and Systolic Venous Return Volumes with Pericardial Effusion

From: Using a human cardiovascular-respiratory model to characterize cardiac tamponade and pulsus paradoxus

VPERI (ml) Right Left
  V VC,D V VC,S D/S Vol. Ratio V PV,D V PV,S D/S Vol. Ratio
15 (control) 55.0 22.6 2.43 37.5 55.4 0.68
700 48.8 24.4 2.00 33.5 54.7 0.61
800 37.0 27.4 1.35 26.0 53.0 0.49
900 20.7 30.7 0.67 16.6 48.5 0.34
1000 8.5 31.5 0.27 10.4 42.1 0.25
  1. Venous return volumes during diastole and systole and the diastolic-to-systolic (D/S) volume ratios for increasing levels of effusion. For the right heart, vena caval return volume is given by VVC,D for diastole and VVC,S for systole. Similarly for the left heart, pulmonary venous return volume is given by VPV,D for diastole and VPV,S for systole. The D/S volume ratio decreases with increasing effusion.