Subvalvular aortic stenosis (canine)

Canine subvalvular aortic stenosis (SAS) is an abnormal, congenital heart murmur caused by subaortic stenosis (SAS).

This genetic trait is polygenic. An animal might have the genes for SAS, yet have no actual sign of SAS. Also, an animal might have signs of subaortic stenosis, and yet offspring with SAS may not demonstrate clinical signs for a couple of generations. Any animal that has subaortic stenosis should not be bred because they can pass the defect on to future offspring.

Symptoms
Puppies and adult dogs diagnosed with subaortic stenosis can suffer from heart failure and sudden death. Symptoms icude sudden/strong lethargicism, continuous heavy panting, and a rise in temperature.

Diagnosis
The Orthopedic Foundation for Animals (OFA) has established a Congenital Heart Registry whose guidelines were established by veterinary cardiologists. A dog which auscultates normally at 12 months of age is considered to be free of congenital heart disease; upon confirmation of this, OFA will issue a certificate.