Perioperative insulin – based management in the form of basal-bolus is quite effective in attaining blood glucose target than intermittent bolus with rapid-acting insulin in type 2 diabetes. Insulin infusion is also an option and can be used in critical and non-critical situations. Degludec has a long half-life of more than 42 hours and current data are not enough to determine its effect on perioperative blood sugars. Here, INS is linked to type 2 diabetes mellitus.