Heart Defects

What Are Heart Defects?

The heart is a pump made of muscle that is divided into four chambers. Blood is pumped into these chambers through four valves that open and control blood flow. Blood from the body that is low in oxygen is pumped through the heart where it receives a new supply of oxygen from the lungs before going back into circulation in the body. A heart defect is any abnormality of the heart’s structure or function that affects this process.


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