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We aimed to determine whether the use of left internal mammary artery (LIMA) to the left anterior descending (LAD) artery during coronary artery bypass grafting (CABG) confers an improved survival benefit to patients with an impaired preoperative left ventricular ejection fraction (LVEF). Between April 1997 and March 2004, 7198 consecutive patients underwent first time CABG to the LAD. There were 627 patients who had an LVEF -30% and of these, 548 patients (87.4%) received a LIMA graft, whiledoi:10.1510/icvts.2004.102707 pmid:17670388 fatcat:zftcqbp4y5ajppwmmn2upzxt5e