Surgical treatment of severe pulmonic stenosis under cardiopulmonary bypass in small dogs
Version of Record online: 9 JAN 2012
© 2012 British Small Animal Veterinary Association
Journal of Small Animal Practice
Volume 53, Issue 2, pages 89–94, February 2012
How to Cite
Fujiwara, M., Harada, K., Mizuno, T., Nishida, M., Mizukoshi, T., Mizuno, M. and Uechi, M. (2012), Surgical treatment of severe pulmonic stenosis under cardiopulmonary bypass in small dogs. Journal of Small Animal Practice, 53: 89–94. doi: 10.1111/j.1748-5827.2011.01163.x
- Issue online: 27 JAN 2012
- Version of Record online: 9 JAN 2012
- Accepted: 4 November 2011; Published online: 9 January 2012
Objectives: The aim of this study was to report the long-term outcome of the surgical palliation of pulmonic stenosis in dogs.
Methods: The subjects comprised three female and six male dogs, mean (±sd) age: 23 (±25) months, mean (±sd) weight: 3·4 (±2·1) kg, diagnosed with severe pulmonic stenosis and right ventricular hypertrophy, with an average preoperative pressure gradient of 153 (±43) mmHg on echocardiography.
Results: The pressure overload with severe pulmonic stenosis was reduced by valvotomy, i.e., open pulmonary valve commissurotomy, with/without biomembrane patch grafting, under cardiopulmonary bypass. The postoperative pressure gradient at 1 to 7 days was significantly decreased to 65 (±39) mmHg (P<0·05). The reduced pressure gradient was maintained at 58 (±38) mmHg at final follow-up.
Clinical Significance: Open valvotomy, pulmonary valve commissurotomy and biomembrane patch grafting were effective in reducing obstruction in severe pulmonic stenosis in dogs.