The target range for blood glucose levels will be 80-110 mg/dl [4.4 – 6.1 mmol/l]. The current blood glucose level and insulin infusion rate will continuously be documented by the CS-1 decision support system and supervised by the investigator. Glucose values will be provided to the system by manual entry. In case of hypoglycaemia, intravenous insulin infusion will be stopped and glucose will be administered via intravenous bolus.