The Effects of Tidal Volume and Respiratory Rate on Oxygenation and Respiratory Mechanics During Laparoscopy in Morbidly Obese Patients

Abstract
Morbidly obese (MO) patients undergoing laparoscopy have lower Pao2 compared with normal-weight (NW) patients. We hypothesized that increases in tidal volume (VT) or respiratory rate (RR) would improve oxygenation. All measurements were performed at: 1) baseline: VT 600–700 mL and 10 breaths/min, 2)