MICHAEL DONNE / SCIENCE PHOTO LIBRARY MICHAEL DONNE / SCIENCE PHOTO LIBRARY
Quadruple bypass heart surgery. Surgical team performs a quadruple coronary bypass operation on a patient's heart. One of the surgeons (at upper right) is wearing magnifying lenses on his spectacles to perform microsurgery. A surgical assistant (at lower right) is mopping up blood with a swab. 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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