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This study suggests that on-pump as compared with off-pump coronary artery bypass grafting is more deleterious to renal function in diabetic patients with non-dialysis dependent renal insufficiency. MDRD GFR is a more sensitive investigation than serum creatinine levels to assess renal insufficiency in patients undergoing coronary bypass.

Deep sternal wound infections (DSWI) continue to be an infrequent but potentially devastating complication after cardiac surgical procedures. Its prevalence is more after coronary artery bypass grafting using single internal mammary artery (IMA) graft. Bilateral internal mammary artery (BIMA) harvesting carries a higher risk of sternal infection than harvesting single IMA. Several risk factors have been identified with sternal wound infections and a few are modifiable. Strategies that reduce DSWI target the modifiable risk factors that include microbiological factors, appropriate antibiotic prophylaxis, tight glycemic control. Surgical strategies to reduce DSWI following BIMA harvest include techniques of IMA harvesting with lesser devascularization of sternum using skeletonized, semiskeletonized and modified pedicle harvest are associated with greater preservation of sternal blood supply and sternal closure and stability techniques. The various strategies to minimize sternal wound infections during preoperative, intra and postoperative periods are summarized in this article.

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Original Research Article 10-year outcomes after off-pump vs on-pump coronary artery bypass grafting.Insights from the Arterial Revascularization Trial.