title: Successful surgical correction of supravalvular pulmonary stenosis under beating heart using a cardiopulmonary bypass system in a dog.
abstract: A male Pomeranian dog aged 1 year and 8 months was presented for evaluation of severe systolic ejection, cardiac murmur and syncope on excitation. Supravalvular pulmonary stenosis was diagnosed. An echocardiogram showed a supravalvular membranous stricture and a severely increased pulmonary arterial velocity in the stricture (6.49 m/s, pressure gradient of 169 mmHg). The supravalvular stricture was surgically removed by pulmonary arteriotomy with the heart beating using a cardiopulmonary bypass system. The postoperative pulmonary arterial velocity at the narrow area decreased to 3.80 m/s, and the pressure gradient decreased to 57.7 mmHg. Six months after the operation, there were no signs of restenosis, and the dog was in good condition without syncope. Surgical correction of pulmonary stenosis with the heart beating using a cardiopulmonary bypass system is useful because of the improvement it brings in safety and reliability.
authors.affiliation: Department of Veterinary Surgery, Tokyo University of Agriculture and Technology, Fuchu, Tokyo, Japan. aiko@vet.ne.jp
authors.forename: Aiko
authors.initials: A
authors.lastname: Soda
authors.forename: Ryou
authors.initials: R
authors.lastname: Tanaka
authors.forename: Yuuto
authors.initials: Y
authors.lastname: Saida
authors.forename: Yoshihisa
authors.initials: Y
authors.lastname: Yamane
mesh_terms: D000818:Animals; D006328:Cardiac Catheterization / Q000662:veterinary*; D002315:Cardiopulmonary Bypass / Q000662:veterinary*; D004283:Dog Diseases / Q000601:surgery*; D004285:Dogs; D015150:Echocardiography, Doppler / Q000662:veterinary; D008297:Male; D011666:Pulmonary Valve Stenosis / Q000601:surgery / Q000662:veterinary*