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A Randomized Comparison of Radial-Artery and Saphenous-Vein Coronary Bypass Grafts

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In the past decade, the radial artery has frequently been used for coronary bypass surgery despite concern regarding the possibility of graft spasm. Graft patency is a key predictor of long-term survival. We therefore sought to determine the relative patency rate of radial-artery and saphenous-vein grafts in a randomized trial in which we controlled for bias in the selection of patients and vessels. methods We enrolled 561 patients at 13 centers. The left internal thoracic artery was used to bypass the anterior circulation