Primary pulmonic infundibular stenosis in 12 cats: natural history and the effects of balloon valvuloplasty.

摘要: Abstract Objectives To evaluate the natural history of primary pulmonic infundibular stenosis in cats and effects balloon valvuloplasty. Background Primary is an uncommon congenital defect cats. The disease has not been described. Information regarding valvuloplasty cat limited. Animals Records between January 1, 1999 December 31, 2005 were reviewed with a confirmed echocardiographic diagnosis stenosis, complete medical history, no evidence significant systemic identified. Methods Echocardiographic, electrocardiographic, radiographic findings are those severe was compared to mild moderate disease. Balloon performed six technique used Results A stenotic gradient ≥70 mmHg right ventricular outflow tract (measured at level stenosis) pulmonary valve annulus ratio ≤0.25 consistent clinical Cats had very guarded prognosis high incidence congestive heart failure (CHF). successfully 4 appeared improve prognosis, especially if prior development CHF. Concurrent hypertrophic cardiomyopathy complicated outcome some Conclusions Severe carries cat. should be considered presence CHF possible. concurrent may complicate prognosis.