Page 201 - Feline diagnostic imaging

204 12 Congenital Heart Disease

(b)

(a)

(c) (d)

Figure 12.10 An 8-month-old male domestic longhair kitten presented for ataxia and increased respiratory effort. He had
polycythemia with a hematocrit of >70%. Thoracic radiographic lateral (a) and ventrodorsal (b) images show enlargement of the
cardiac silhouette. The trachea is dorsally deviated. The pulmonary vasculature is decreased. On the lateral projection, the apex of the
cardiac silhouette is shifted dorsally consistent with right ventricular enlargement. (c) A 2D echocardiogram of the right (RV) and left
(LV) ventricles shows a greatly enlarged right ventricle. The interventricular septum is thickened, flattened, and hyperechoic. (d) A 2D
echocardiogram shows an overriding aorta (Ao), along with a ventricular septal defect (arrows). Pulmonic stenosis (not shown) was
also identified consistent with a tetralogy of Fallot. IVS, interventricular septum.
References

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