| RIGHT ATRIAL FILLING DEPENDENT UPON | VENTRICULAR FILLING DEPENDENT UPON | ||||
|---|---|---|---|---|---|
| * skeletal muscle pump | * atrial contraction | ||||
| * respiratory movements | * passive blood flow | ||||
| * venous tone (compliance) | * active ventricular relaxation (negative luminal pressure) | ||||
| * posture | * pericardial restraint (stiffness) | * downward movement of ventricular during systole | * ventricular compliance |