WILL & DENI MCINTYRE / SCIENCE PHOTO LIBRARY WILL & DENI MCINTYRE / SCIENCE PHOTO LIBRARY
Coronary bypass. Surgical team performs a coronary bypass operation on a patient's heart. Coronary bypass surgery restores the blood supply to the heart muscle in patients with coronary heart disease. Parts of the coronary arteries blocked by fatty plaques are bypassed by grafts of veins usually taken from the leg. The improved blood flow to the heart muscle relieves angina and reduces the risk of heart attack.
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