- patients scheduled for non-thoracic surgery in general anesthesia: BMI 20-35 kg/m2, surgery scheduled for general anaesthesia/narcosis without any expected complications. Typical candidates: Laparotomy/laparoscopy. Cholecystectomy, adnexectomy, hysterectomy. No disease other than the indication for surgery, no medication other than those needed for the present condition demanding surgery, e.g. antibiotics, pain medicine.