ventricular interdependence
The mechanical interaction between right and left ventricles through shared septal wall and pericardial space.
Full Definition
Ventricular interdependence refers to the phenomenon whereby changes in the pressure, volume, or function of one ventricle directly influence the geometry and performance of the other ventricle. This interaction occurs through the interventricular septum, which can shift position based on differential pressures, and through the constraining effects of the pericardium. The concept is clinically important in conditions such as right heart failure, pulmonary embolism, and constrictive pericarditis, where right-sided pressure elevation can impair left ventricular filling and function through septal shift and pericardial constraint.
Usage
Usage note: Often observed as paradoxical septal motion on echocardiography.
In Context
- "Echocardiography demonstrated ventricular interdependence with paradoxical septal motion due to elevated right heart pressures." — Pulmonary hypertension evaluation
- "The patient's reduced cardiac output was explained by ventricular interdependence in the setting of acute right heart failure." — Critical care consultation