Figure 4.

Pulmonic regurgitation. Demonstrates a case of severe pulmonary regurgitation in a patient with tetralogy of Fallot on transthoracic echocardiography. (A) Parasternal short axis view of the pulmonary valve and main pulmonary artery with color Doppler showing a large regurgitant jet, meeting criteria for severe pathology as it covers greater than 50% of the pulmonary valve annulus. (B) Characteristic continuous-wave Doppler of severe pulmonary regurgitation with a dense regurgitant jet with steep deceleration and rapid termination. (C) 2D echocardiographic image showing right ventricular enlargement as a consequence of ongoing pulmonary regurgitation.