Brian A. Scansen, DVM, MS, DACVIM (Cardiology): No relevant disclosure to display
Presentation Description / Summary: Pulmonary valve stenosis (PS) is now the most common congenital heart malformation in dogs. While PS is often considered as a single entity or subcategorized into a binary classification scheme, there is marked heterogeneity in this disease with variability in annular size, valve thickening, valve fusion, fibrous adhesions, aneurysmal sinuses, etc. Related conditions such as supra/subvalvular PS, pulmonary arterial stenosis, infundibular PS, and double-chambered right ventricle are poorly defined in animals and seemingly contradictory in the literature. With the increased use of cardiac CT, our ability to characterize the morphologic features of the canine right ventricular outflow tract has improved. This lecture will provide the presenter's perspective on how best to characterize the numerous morphologic variants of right ventricular outflow tract obstruction based on echocardiographic, computed tomographic, and angiographic features - with implications for treatment and prognosis.
Learning Objectives:
Upon completion of this session, the audience member will appreciate the morphologic features that comprise the stenotic pulmonary valve.
Upon completion of this session, the audience member will have a working nomenclature to describe obstructions of the right ventricular outflow tract.
Upon completion of this session, the audience member will recognize controversies that remain in describing and treating right ventricular outflow tract obstructions in dogs.
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