Fig. 1From: Metformin is not associated with lactic acidosis in patients with diabetes undergoing coronary artery bypass graft surgery: a case control studyComparison of peak serum lactic acid levels in the first 24 h after surgery in the two patient groups. (Patients with diabetes who took metformin perioperatively = Diabetes + metformin, patients with diabetes were not on metformin = Diabetes - metformin)Back to article page