Canine Aortic/Subaortic Stenosis (AS/SAS) is a congenital heart defect that affects your dog’s heart’s left ventricle. It’s caused by the aortic valve or subaortic area narrowing, which restricts the flow of blood from the left ventricle to the aorta. The blood restriction can lead to an increased pressure in their left ventricle, which can cause symptoms such as exercise intolerance, fainting, and even sudden death.
AS/SAS is most commonly seen in large dog breeds, particularly Boxers and Bulldogs. It’s also seen in some smaller breeds such as the Chihuahua and Pomeranian. The condition can be diagnosed with an echocardiogram, which is an ultrasound for the heart.
It’s important to note that AS/SAS can be managed with proper treatment and care. It’s also important to know that this condition can be fatal if left untreated. It’s important to have your pet examined by a veterinarian if you think they might have AS/SAS.
Symptoms of Canine Aortic/Subaortic Stenosis (AS/SAS)
The most common symptoms of AS/SAS are:
- Exercise intolerance
- Fainting
- Sudden death
Other signs can include difficulty breathing, coughing, and a decreased appetite. If your pet has any of these symptoms, it’s important to have them examined by a veterinarian as soon as possible.
Stages of the Canine Aortic/Subaortic Stenosis (AS/SAS)
AS/SAS is typically split into three stages:
Stage 1
Mild narrowing in their aortic valve or subaortic area. This stage might not cause any symptoms and can often be managed with medications.
Stage 2
Moderate narrowing in their aortic valve or subaortic area. Symptoms can begin to appear at this stage, and treatment could include medications and/or surgery.
Stage 3
Severe narrowing in their aortic valve or subaortic area. Symptoms are usually more severe at this stage, and treatments include medications and/or surgery.
Treating Canine Aortic/Subaortic Stenosis (AS/SAS)
Treatment AS/SAS will depend on the stage of the condition. Treatment can include medications to reduce the pressure in their left ventricle, or surgery to widen the aortic valve or subaortic area. In some cases, a combination of both treatments could be needed.
It’s important to note that even with proper treatment and care, AS/SAS can still be fatal. It’s important to have your pet examined by a veterinarian if you think that they could have this condition.
Preventing Canine Aortic/Subaortic Stenosis (AS/SAS)
Unfortunately, there is no way to prevent AS/SAS. Early diagnosis and treatment can help reduce the risk of complications and improve the chances for your pet.