How long do dogs with subaortic stenosis live?
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.
Can subaortic stenosis be cured?
Discrete subaortic stenosis can be cured in most patients by membranectomy associated with either myotomy or myectomy.
Is subaortic stenosis hereditary dog?
It most commonly occurs in large-breed dogs. Subaortic stenosis appears to be genetic in origin; the first signs of it may be present at birth (moderate or severe cases) or may appear in the first year of life (usually milder cases).
Is subaortic stenosis congenital?
Subvalvular aortic stenosis (AS) is a rare congenital heart defect in which the left ventricle is narrowed below the level of the aortic valve resulting in obstruction to blood flow out of the heart. The condition is also known as subaortic stenosis.
What does Subaortic mean?
(sŭb’ā-ōr’tik), Below the aorta.
What causes subaortic stenosis?
Subaortic stenosis is the second most common form of left ventricular outflow obstruction. It occurs when the flow of blood from the heart’s pumping chamber or left ventricle is restricted. This obstruction is in the area of the heart under the aortic valve.
How do you know if your dog is SAS?
How to tell if your dog is sad
- Vocalizations like whines or whimpers.
- Mopey behavior around things they typically enjoy.
- Lowered energy.
- Refusing food or treats.
- Eyes appear squinty or smaller than usual.
- A change in sleep patterns or behavior.
How serious is subaortic stenosis?
As the obstruction worsens, some patients may have chest pain or pass out during exercise or exertion. Others may develop fast heart beats or, rarely, congestive heart failure as fluid builds up in the heart. Patients with severe or untreated subaortic stenosis may be at risk for sudden cardiac death.
Is subaortic stenosis rare?
Subaortic stenosis, also called subvalvular aortic stenosis or SAS, is a rare heart defect that affects 1% of infants who are born with congenital heart defects.
Is subaortic stenosis serious?
How is subaortic stenosis treated?
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.