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.
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.
Can subaortic stenosis be cured?
Discrete subaortic stenosis can be cured in most patients by membranectomy associated with either myotomy or myectomy.
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.
Is subaortic stenosis hereditary in dogs?
Subaortic stenosis (SAS) is the most common of these conditions in dogs. Aortic stenosis is a hereditary condition that occurs in certain breeds. The dog breeds most commonly affected by aortic stenosis include the Newfoundland, Boxer Dog, Rottweiler, Golden Retriever, and Dogue de Bordeaux.
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.
Can you breed a dog with subaortic stenosis?
Given the genetic basis of aortic stenosis, affected dogs should not be bred.
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.
What causes aortic stenosis in dogs?
Aortic stenosis, typically caused by a ridge or ring of fibrotic tissue in the subaortic region (subaortic stenosis), is a common congenital defect of large breed dogs. The condition is typically associated with a loud ejection murmur and weak peripheral pulses in more severely affected dogs.
How long will my dog live with severe pulmonic stenosis?
Dogs with mild pulmonic stenosis may live a normal life. Whereas dogs with severe pulmonic stenosis develop clinical signs of exercise intolerance, fainting, right sided congestive heart failure, abnormal heart rhythms, and rarely sudden 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.
What are symptoms of subaortic stenosis?
Symptoms may include light-headedness, shortness of breath or fatigue. 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.
What should I do if my dog has subaortic stenosis?
If your dog has been found to have moderate or severe subaortic stenosis, it is important to reduce the workload on the heart (and therefore to decrease the risk of sudden, collapse, fainting, or even sudden death) by controlling or avoiding bursts of sudden activity or any intense exertion.
Can dogs with aortic stenosis have general anesthetic?
■ Dogs with mild to moderate aortic stenosis may not be good candidates for anesthetic. ■ Medical procedures requiring general anesthetic should be avoided or steps taken to mitigate the risk of anesthetic if required. ■ Exercise should be moderate and not stressful, or extreme exercise not permitted.
Is there a cure for subaortic stenosis?
Moderate or severe subaortic stenosis may cause symptoms and may increase the risk of sudden death. Depending on the exact degree of severity, treatment may be required, and other measures (such as limiting activity) may be recommended to minimize the amount of work done by the heart. There is no cure for subaortic stenosis.
Can a puppy with a heart murmur still have subaortic stenosis?
Puppies that still have a heart murmur after six months of age may have subaortic stenosis, especially if the murmur is on the left side of the heart. X-rays and ultrasounds can help confirm the diagnosis.