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. A metal retractor holds open the sternum of the chest. The surgeon is using a pair of scissor forceps. A surgical assistant (at centre) holds a heat device for sealing (cauterising) blood vessels. 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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