Indeed, diabetes mellitus is associated with increased mortality and morbidity after cardiac surgery in general and CABG specifically.268 Diabetes mellitus is classified as type 1 if it results from -cell destruction or as type 2 if it results from a progressive insulin secretory defect and insulin resistance, but other causes of diabetes mellitus exist, including genetic defects in insulin secretion, drug- induced diabetes mellitus, and gestational diabetes mellitus.269 Traditionally, the diagnosis of diabetes mellitus has been based on a fasting plasma glucose >126 mg/dL, a 2-hour plasma glu- cose >200 mg/dL after oral administration of 75 g glucose, or a random plasma glucose of >200 mg/dL in a patient with the classic symptoms of diabetes mellitus.270 In 2009, however, an International Expert Committee recommended the use of the ) test be added, with a threshold >6.5% as a diagnostic criterion for diabetes mellitus.271 Because it is not always known whether a patient has dia- betes mellitus or glucose intolerance before surgery, it is reasonable for all patients undergoing CABG to have pre- operative fasting plasma glucose and HbA1c measurements. This may facilitate optimal diabetes mellitus management in the perioperative and postoperative periods. As detailed else- the perioperative control of serum glucose (glucose goal, 125 200 mg/dL) has been shown to improve both short- outcomes after CABG in most stud- ies. 