Optimization of PEEP During Laparoscopic Surgery

Measurement of the plateau pressure, positive end-expiratory pressure, driving pressure, end-expiratory lung volume, compliance of respiratory system on volume-controlled ventilation

Measurement of end-tidal carbon dioxide tension, volume of CO2 eliminated per minute

Measurement of the oxygen partial pressure and the carbon dioxide partial pressure

Measurement the pressure in the lower third of esophagus during inspiration and expiration