Video 31.15 Left pulmonary artery sling
Left pulmonary artery sling. Echocardiogram with two-dimensional and color Doppler imaging in a transverse orientation from a high parasternal window. The left pulmonary artery arises from the right pulmonary artery and then courses posteriorly and leftwards. The trachea is located to the left of the left pulmonary artery origin but may be difficult to visualize by echocardiography.