Study Status: Completed
Recruit Status: Completed
Study Type: Interventional
Official Title: Intrinsic PEEP During Mechanical Ventilation of Patients With Obesity. Influence of Low Respiratory Rate With Unchanged Minute Volume.
Brief Summary: It is demonstrated that expiratory flow limitation and as a consequence, intrinsic positive end-expiratory pressure (PEEP) is present in grossly obese subjects especially in the supine position. The investigators tried to investigate the effect of low respiratory rate and high tidal volume on the intrinsic PEEP and gas exchange for obese subjects undergoing general anesthesia.