Left ventricular (LV) injection study in a dog with a ventricular septal defect and large sinus of Valsalva. The ventricular septal defect (arrow) is adjacent to the overriding aortic sinus of Valsalva (SV) and larger than in Case 028. Right ventricle (RV).

Continued left ventricular (LV) injection study in a dog with ventricular septal defect and a large sinus of Valsalva showing asymmetry of the sinuses of Valsalva and proximity to the VSD. Right ventricle (RV).