ventricular interdependence
The mechanical and hemodynamic interaction between the left and right ventricles through shared structures and fluid dynamics.
Full Definition
Ventricular interdependence describes the complex mechanical coupling between the right and left ventricles, mediated through the interventricular septum, pericardium, and shared myocardial fibers. Changes in one ventricle's filling, contractility, or afterload directly affect the other ventricle's performance through mechanisms including septal shift, pericardial constraint, and altered coronary perfusion. During cardiac anesthesia, understanding ventricular interdependence is crucial for interpreting hemodynamic changes, particularly in patients with right heart failure, pulmonary hypertension, or during procedures affecting ventricular loading conditions. This concept explains why isolated right heart dysfunction can significantly impair left ventricular filling and output.
Usage
Usage note: Explain specific mechanisms when discussing; relate to clinical observations.
In Context
- "Acute right heart failure demonstrated ventricular interdependence as left ventricular filling became severely impaired." — Case presentation
- "The concept of ventricular interdependence explained the paradoxical septal motion observed on echocardiography." — Teaching rounds