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Why is the internal mammary artery used for a heart bypass?

Dr. Mehmet Oz, MD
Cardiology (Cardiovascular Disease)
Although different blood vessels may be used as the source of grafts for heart bypass surgery, the internal mammary artery in the chest is used when possible. One reason is that the bypass generally lasts for the rest of the patient’s lifetime. Watch this animation to learn more about the mammary artery.


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