title: Pulmonic stenosis and right-to-left atrial shunt in three dogs.
abstract: Using cardiac catheterization, pulmonic stenosis and right-to-left atrial shunt were diagnosed in 3 young dogs that were evaluated because of weakness, cyanosis, and polycythemia. Injection of contrast material into the caudal vena cava or crossing the atrial septal defect with the catheter tip from the right atrium into the left atrium confirmed the diagnosis. Tetralogy of Fallot, with right-to-left shunt through a ventricular septal defect, is a more common congenital malformation associated with the aforementioned clinical signs. Differentiation between the 2 defects is important, because surgical decompression of the right ventricle will lead to reduction of right atrial pressure and diminishment of the shunt.
authors.affiliation: Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville 32610.
authors.forename: C W
authors.initials: CW
authors.lastname: Lombard
authors.forename: N
authors.initials: N
authors.lastname: Ackerman
authors.forename: C R
authors.initials: CR
authors.lastname: Berry
authors.forename: R R
authors.initials: RR
authors.lastname: King
authors.forename: C D
authors.initials: CD
authors.lastname: Buergelt
mesh_terms: D000818:Animals; D001794:Blood Pressure; D006328:Cardiac Catheterization / Q000662:veterinary; D003937:Diagnosis, Differential; D004283:Dog Diseases / Q000000981:diagnostic imaging*; D004285:Dogs; D004562:Electrocardiography / Q000662:veterinary; D005260:Female; D006344:Heart Septal Defects, Atrial / Q000150:complications / Q000000981:diagnostic imaging / Q000662:veterinary*; D011666:Pulmonary Valve Stenosis / Q000150:complications / Q000000981:diagnostic imaging / Q000662:veterinary*; D011859:Radiography