Fig. 2
From: Spontaneous closure of an isolated congenital perimembranous ventricular septal defect in two dogs
Standard right parasternal short-axis color Doppler echocardiographic images (systolic frames at the level of the aortic valve) of the mixed breed dog (case 2) at 4.5 months of age (A) and at 2.5 year of age (B). The Nyquist limit was 80 cm/s in both directions. A A left-to-right shunting ventricular septal defect is present adjacent to the aorta and the tricuspid valve. B Absence of flow through the previously detected ventricular septal defect can be appreciated