Aortic stenosis causes
Aortic valve stenosis is most commonly caused by aging processes. Over time, as the blood is ejected forcefully by the left ventricle into the aorta, the thin leaflets (doors) of the aortic valve can get damaged. When the leaflets are damaged, scarring occurs and calcium deposits on the leaflets restrict their movement and cause narrowing of the valve opening.
Aortic valve stenosis can also be caused by congenital heart defects, including deformities such as bicuspid aortic valve. In this condition, the valve has two flaps rather than the normal three.
Aortic stenosis symptoms
Symptoms can include:
- Difficulty catching your breath
- Fatigue
- Dizziness or lightheadedness
- Chest pain
- Swelling in the legs or feet
- Fainting with exertion
Diagnosing aortic valve stenosis
Often, heart valve disease is diagnosed when a physician hears abnormal sounds (heart murmur) through a stethoscope. Diagnostic tests to specify the valve disease include:
- Electrocardiogram (EKG/ECG) – A test that records the electrical activity of the heart
- Chest X-ray – A radiograph or picture of the heart and lungs, including blood vessels, ribs and bones of the spine
- Transesophageal echocardiogram (TEE) – A test to provide an image of heart structures; a small transducer (like a microphone) is passed down the esophagus to produce the image
- Echocardiogram (also called echo) – This test uses sound waves to assess the function and structure of the heart muscle and valves
- Cardiac catheterization – A procedure to check for problems in coronary arteries. A long, thin tube (catheter) is inserted into an artery or vein in the groin, arm or neck, then threaded to the heart. The physician injects a contrast solution into the artery and takes X-rays to check for blockage and other abnormalities
- Exercise stress test – A test performed on a treadmill or stationary bicycle to measure heart, lung and muscle function during physical activity. You are attached to an electrocardiogram (EKG/ECG) to record electrical activity of the heart
Aortic stenosis treatment
Surgery and other procedures
A procedure to repair or to replace the defective valve with an artificial valve may be necessary. There are currently two procedures that replace defective aortic valves: surgical aortic valve replacement and transcatheter aortic valve replacement. Early aortic valve replacement usually improves symptoms and can help prevent damage to the heart that can occur if the stenosis is not treated.
Balloon valvuloplasty is another, less invasive procedure that may be appropriate for aortic valve stenosis when surgery is not an option.
Medications
Some people who have aortic valve regurgitation or stenosis have few or no symptoms, but if you’re diagnosed with these conditions, you should be monitored by your physician. Medication may be necessary to treat the symptoms at a certain point.
