Morbidly obese patients scheduled for abdominal surgery duration at least two hours are randomized in two groups, ventilation with high PEEP and recruitment maneuvers or low PEEP and no recruitment. the incidence of postoperative pulmonary complications as well as intraoperative side effects is recorded.
- Patient scheduled for surgery under general anesthesia
- BMI ≥ 35 kg/m2
- Expected duration of surgery ≥ 2 h
- Age < 18
- Previous lung surgery
- Persistent hemodynamic instability
Patients are followed up until discharge from the hospital for the maximum duration of five days. Blood and urine samples will be collected intraoperatively and immediately postoperatively in the PACU.