Figure 3From: Echocardiography of isolated subacute left heart tamponade in a patient with cor pulmonale and circumferential pericardial effusion Right ventricular (RV) pressure was estimated by measuring tricuspid regurgitation (TR) velocity as stated in the Bernoulli equation: RV pressure = 4 × (tricuspid regurgitation velocity) 2 + central venous pressure.Back to article page