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Aortic valve stenosis occurs when the aortic valve narrows and doesn’t open as it should. This limits the amount of blood pumped from your heart into, and then out of, the aorta — the main artery of the body. The aortic valve is a key valve in the body’s blood circulation system.
Aortic valve stenosis generally produces symptoms only once it progresses. In the beginning, you may not have symptoms.
You may experience symptoms of severe aortic valve stenosis once the condition has progressed to the symptomatic stage. Symptoms of severe aortic valve stenosis include:
Infants and children may have different symptoms from adults, or they may not appear to display any symptoms at all. If they do display symptoms, these might include:
In severe cases, an infant may have major breathing difficulties that develop within weeks of birth. Mild cases have the potential to worsen as the child gets older.
Genetics and certain health conditions may prevent the aortic valve from completing its proper functions. The aortic valve opens and closes every time your heart beats. This continuous action occurs every second of your life.
Aortic valve stenosis may be present at birth. When it is, the flaps, or "leaflets," of the aortic valve are irregularly formed. These leaflets make up the opening of the aortic valve. When functioning properly, they fit together tightly when closed. Children born with aortic valve stenosis usually have one of the following irregularities in their aortic valve leaflets:
Rheumatic fever is one of the most common causes of heart valve problems. Rheumatic fever may affect many parts of the body, including the:
Rheumatic fever can occur in adults and children who have, or have had, strep throat. Strep throat is a contagious condition caused by Streptococcus bacteria.
Aortic valve stenosis most often occurs in older adults. Age-related aortic valve stenosis is the most common form of the condition, according to the American Heart Association. It’s caused by caused by calcification or scarring of the aortic valve. It usually begins sometime after the age of 60, but people may not begin to experience symptoms until age 70 or 80.
Calcium is an important mineral needed for strong bones. However, the mineral may present problems in your heart if it deposits in the aortic valve. Calcium deposits usually affect the leaflets of the aortic valve. Calcium deposits can prevent the aortic valve from properly opening and closing. These deposits often increase in the aortic valve as we age due to scarring and calcium buildup.
Improperly functioning aortic valve leaflets may also allow blood to leak back into the left ventricle after it enters the aorta. This is called valvular insufficiency, or regurgitation.
There are several risk factors that may affect you or someone in your family.
Men have a higher risk of aortic valve stenosis than women. The condition occurs most often in men between the ages of 30 and 60.
Children born with either malformed valve leaflets or fewer than three leaflets will have problems with normal blood flow through the aorta.
Rheumatic fever can produce significant problems with the valve leaflets. Scar tissue from the disease can make the leaflets hard or even fused. Rheumatic fever damages:
After reporting your symptoms to your general doctor, you may be referred to a cardiologist, who is a heart specialist. Your cardiologist will check your physical condition with a thorough examination. This includes listening to your heart for any abnormal sounds. You may need imaging tests to show what is going on inside your heart.
Here are some of the imaging tests your doctor may order:
There are no specific medications to fix aortic valve stenosis because the condition is irreversible once it occurs. Your doctor can prescribe medication to treat the problems caused by the condition or the health issues that produced the condition in the first place. Surgery may be able to repair or replace the valve.
Although medication can’t cure aortic valve stenosis, your doctor may prescribe drugs to manage symptoms or reduce the burden on your heart. Some medications include:
Your doctor may recommend a procedure or surgery to repair or replace the damaged valve. A minimally invasive procedure to repair the valve is called valvuloplasty. This procedure can be performed through a soft thin tube called a catheter, which is less invasive than traditional surgery. In this type of procedure, the surgeon inserts a long, thin catheter with a tiny balloon at the end into a vein in your groin or arm. The surgeon guides the tube into your heart and inflates the balloon. Once the valve is opened, the surgical team removes the balloon and catheter. The procedure is minimally invasive, and recovery time is shorter than the alternative open-heart surgery.
Your surgeon may decide that your damaged valve must be replaced. This requires open-heart surgery. Your surgeon may insert a mechanical valve or a valve from a cow or pig. Sometimes valves from human cadavers are used. Open-heart surgery requires a much longer recovery period.
Your health may improve dramatically once you receive treatment. Surgical treatments for aortic valve stenosis have high rates of success. Your outlook depends on a combination of factors:
Sometimes, aortic valve stenosis is not a congenital defect, meaning you were not born with the condition. If this is the case, there are steps you can take to ease the burden on your heart:
Healthy lifestyle habits may help reduce the burden on your heart. Be sure to discuss any related health concerns with your doctor.
Written by: Brindles Lee Macon
Medically reviewed on: Aug 22, 2016: Debra Sullivan, PhD, MSN, RN, CNE, COI
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