The effect of temperature change during operation of obesity.

60 patients will be enrolled in the study with laparoscopic abdominal surgery under general anesthesia. Patients will be divided into two groups according to body mass index (Group I: if BMI is equal ot greater than 30 and Group II: if BMI is below than 24.9). In all cases, to avoid errors in body temperature measurements arising from the diurnal rhythm, body temperature measurements were taken in the morning between 08:30 and 13:00 hours. After preoxygenation with 100% O2, intravenous induction of anesthesia was obtained with 2-2,5 mg/kg propofol 0.6mg/kg rocuronium and 0.1 mcg/kg remifentanyl. After endotracheal intubation, anesthesia was maintained with 5-6% desflurane in 50% air-50% O2. Respiration was continued mechanically and was adjusted to 30 to 40 mmHg ETCO2. In addition, to partially humidify and heat inhaled gases, a disposable humidifier was added to the breathing circuit. When necessary, patients were given additional doses of remifentanyl infusion and rocuronium. To remove the residual muscle relaxant effects during recovery from anesthesia, 0.04 mg/kg neostigmine, and when required, 0.01 mg/kg intravenous atropine was used. When laryngeal reflexes and adequate spontaneous breathing returned, the patients were extubated. The patients's temperature will follow every 5 minutes during operating room and postanesthetic care unit. Temperatures will record from central temperature, axillary, wrist, finger, thigh, cruris.