Atrial septal defect, dog, echocardiogram
Atrial septal defect, dog, echocardiogram
Atrial septal defect, dog, echocardiogram

    Echocardiographic image of a secundum-type atrial septal defect (ASD) in a dog. RA = right atrium, LA = left atrium, RV = right ventricle, LV = left ventricle.

Courtesy of Dr. Sandra Tou.