Сердце состоит из четырех камер – двух предсердий и двух желудочков. Normally the blood flows from the right atrium into the right ventricle, and then into the lungs. Here the blood is saturated with oxygen. Oxygenated blood returns to the left atrium and moves down to the left ventricle, which goes to other organs of the body.
The defect of the atrioventricular (AB) channel is a rare heart defect. In the presence of the disease a large hole in the center of the heart chamber connects all four. Thus all of the blood cells is mixed, which leads to problems of the heart.
Valves, separating the atria from the ventricles, are formed into one large valve. There may also be other violations.
The disease is a congenital defect. It means, that a child is born with it. It is not known, why some children develop abnormal heart.
Risk factors for congenital heart defects include:
Symptoms may include:
This disease can lead to heart failure. If the child has any of these symptoms, you must immediately seek medical help.
The doctor asks about the symptoms, observed the child, He is studying the medical history and doing a physical exam.
Tests may include the following:
Treatment involves the following procedures:
The operation usually corrects the defect. The goal of surgery is to close the hole. Large valve is divided into two flaps. If the valve can not be repaired, perhaps, will have to do surgery to replace it with an artificial one.
After surgery, a child needs to have regular check-ups at the doctor. The doctor may recommend the following:
Atrioventricular canal defects, usually, It can not be prevented. Some assistance can receive appropriate prenatal care.
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