Heart bypass surgery. Arm of a patient having their radial artery removed for use in a coronary artery bypass graft (CABG). The radial artery runs from just below the elbow to the wrist. Tendons are white. During CABG, a healthy artery is attached to the diseased coronary artery. This re-routes the blood flow, bypassing the blocked coronary artery. Blood vessels can become blocked by the build-up of fatty plaques, known as atherosclerosis. This reduces blood flow to the areas served by the vessel. Inadequate blood flow to the heart can lead to heart pain (angina) or a heart attack (myocardial infarction).
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