J. A. Stern's and K. M. Meurs's current address is North Carolina State University, College of Veterinary Medicine, 1052 William Moore Dr, Raleigh, NC 27607, USA
Familial subvalvular aortic stenosis in golden retrievers: inheritance and echocardiographic findings
Article first published online: 14 MAR 2012
© 2012 British Small Animal Veterinary Association
Journal of Small Animal Practice
Volume 53, Issue 4, pages 213–216, April 2012
How to Cite
Stern, J. A., Meurs, K. M., Nelson, O. L., Lahmers, S. M. and Lehmkuhl, L. B. (2012), Familial subvalvular aortic stenosis in golden retrievers: inheritance and echocardiographic findings. Journal of Small Animal Practice, 53: 213–216. doi: 10.1111/j.1748-5827.2011.01187.x
Presented in part at the 28th American College of Veterinary Internal Medicine Forum, Anaheim, California, June 2010.
- Issue published online: 14 MAR 2012
- Article first published online: 14 MAR 2012
- Accepted: 1 February 2012
Objectives: To describe the echocardiographic findings and pedigree analysis of golden retrievers with subvalvular aortic stenosis.
Methods: Seventy-three golden retrievers were evaluated by auscultation and echocardiography. A subcostal continuous-wave Doppler aortic velocity ê2·5 m/s and presence of a left basilar systolic ejection murmur were required for diagnosis of subvalvular aortic stenosis. Three echocardiographic characteristics were recorded: evidence of aortic insufficiency, subvalvular ridge or left ventricular hypertrophy. A disease status score was calculated by totalling the number of echocardiographic -characteristics per subject.
Results: Thirty-two of 73 dogs were affected and their aortic velocities were as follows: range 2·5 to 6·8 m/s, median 3·4 m/s and standard deviation 1·2 m/s. Echocardiographic characteristics of 32 affected dogs were distributed as follows: left ventricular hypertrophy 12 of 32, aortic insufficiency 20 of 32 and subvalvular ridge 20 of 32. Disease status score ranged from 0 to 3 with a median of 2. There was a statistically significant correlation between aortic velocity and disease status score (r=0·644, P<0·0001). Subvalvular aortic stenosis was observed in multiple generations of several families and appears familial.
Clinical Significance: Subvalvular aortic stenosis in the golden retriever is familial. Severity of stenosis correlates well with cumulative presence of echocardiographic characteristics (left ventricular hypertrophy, subvalvular ridge and aortic insufficiency).