The Ross Procedure
What is the Ross Procedure?
The Ross procedure is a complicated operation designed for people who need a new aortic valve. The heart has four valves, which keep blood flowing in one direction. The aortic valve sits between the left ventricle and the aorta. The left ventricle is the main pumping chamber of the heart and continually pumps oxygenated blood from the heart to the body. After the left ventricle squeezes and pumps blood into the body's blood vessels, the aortic valve functions to keep the ejected blood from going back into the left ventricle.
Problems with heart valves usually fall into one of two categories: the valve may leak (allow the back filling of blood into the ventricle) or it may be tight (not allowing blood to easily pass through in the correct direction). Either of these problems may cause the need for a new valve.
Types of Valves Replaced Using the Ross Procedure
Replacement heart valves traditionally come in two types:
- Made of metal, strong cloth and plastic.
- Function well and rarely wear out.
- Risks associated include blood clots which may form on the valve. Patients with mechanical valves have to be on an "anti-clotting" medication forever.
- Made from animal or human cadaver tissue.
- Work well and do not require anti-clotting medication.
- Risks associated include valve breakdown, causing it to be replaced, generally after 10-15 years.
The Ross procedure is an aortic valve replacement in which the patient's pulmonary valve - the valve between the right ventricle and the pulmonary artery which goes to the lungs - is removed and placed where the aortic valve usually sits. The demands of the valve in the pulmonary position are much less than in the aortic position, since the pressures on the right side of the heart are much less than on the left side.
The patient's pulmonary valve (now in the aortic position) may last a lifetime. No anti-clotting medication is needed. Another advantage of the Ross procedure in children is that the pulmonary valve will grow in the aortic position and an oversized new pulmonary valve may be placed. In other words, it decreases the number of times children will need another operation to replace a valve which has become too small.
The Ross procedure can be a wonderful alternative for young people who need a new aortic valve, without a lifetime of anti-clotting medication.
Risks of the Ross Procedure
Risks associated with the Ross procedure include:
- New valve(s) may fail - odds of needing a replacement valve are roughly 20% over 10 years
- Ross procedure is a larger, more extensive operation with more chance for complications
The decision whether the Ross procedure or a conventional valve replacement is the better option depends on the patient's individual circumstance and should be discussed fully with the family, patient, and physicians.
Children' s Memorial Hermann Hospital
Houston, Texas 77030
Phone: (713) 222-2273
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Note: This page is meant to be a helpful, informative introduction on the subject of the Ross procedure. The information may not be applicable to all cases, especially if there are additional defects. It is not meant to replace the opinion of a personal physician.