Right Ventricular Structure and Function - Almost 75 % of the RV systolic function is dependent in longitudinal free RV wall motion. - Proper IVS position and contractile function are crucial for the RV function - The IVS function and curvature are modified in response to any RV overload. - Septomarginal and moderator bands plays crucial role in short axis RV inward function - Twisting and rotational movements do NOT contribute significantly to RV ejection in compare to the LV - The RV contraction is sequential and peristaltic: Inlet toward the trabecular RV free wall and end up with RV infundibulum. - TAPSE is reflect the RV and RA longitudinal function. Having normal TAPSE doesn't mean normal RV - RV surface to volume ratio is high, therefore, a smaller free wall inward motion is required to eject the same amount of the LV stroke volume - The epicardial layer is mainly made by circumferential muscle and the endocardial is mainly longitudinal muscle Fawaz Alenezi, MD @fawazalenezi55 #RV #Right #Ventricular #Structure #Function #Ventricle #Cardiology #Pathophysiology
