Recent data reports an average survival time of 5-7 years in these patients. Many will suffer from exercise intolerance or fainting episodes, and a significant number will have fatal collapse episodes prior to middle age. Those that live to middle age may eventually develop congestive heart failure.
How common is subaortic stenosis in dogs?
Subaortic stenosis (SAS) is one of the most common congenital heart defects in dogs. Retrospective studies suggest that SAS accounts for ~15-35% of congenital heart disease in dogs, and it is rare in cats.
How is subaortic stenosis treated in dogs?
TREATMENT/PROCEDURE: Therefore, dogs with moderate or severe subaortic stenosis, may require medication. The most common form of treatment is a medication given orally called βeta blockers, which reduce the intensity of the heart's work, help to prevent the heart from beating too fast and can control arrhythmias.
Can subaortic stenosis be cured?
Discrete fibromuscular subvalvular aortic stenosis is treated surgically by complete resection with myotomy, with or without myomectomy through an aortotomy. Clinically significant aortic regurgitation may require aortic valve repair or replacement.
Is aortic stenosis in dogs treatable?
Treatment for aortic stenosis in dogs varies based on the severity of the condition. While open-heart surgery could theoretically cure the condition, vets don't usually perform it. That's because it's risky and hasn't been shown to improve life expectancy.
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