Ventilation strategies in obese patients undergoing surgery: a quantitative systematic review and meta-analysis† M. Aldenkortt, C. Lysakowski, N. Elia,

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Ventilation strategies in obese patients undergoing surgery: a quantitative systematic review and meta-analysis† M. Aldenkortt, C. Lysakowski, N. Elia, L. Brochard, M.R. Tramèr British Journal of Anaesthesia Volume 109, Issue 4, Pages 493-502 (October 2012) DOI: 10.1093/bja/aes338 Copyright © 2012 The Author(s) Terms and Conditions

Fig 1 Study selection process. RCT, randomized controlled trial; PEEP, positive end-expiratory pressure; RM, recruitment manoeuvre. British Journal of Anaesthesia 2012 109, 493-502DOI: (10.1093/bja/aes338) Copyright © 2012 The Author(s) Terms and Conditions

Fig 2 PEEP plus RM vs PEEP alone. (a) Impact on intraoperative PaO2/FIO2 ratio (kPa). (b) Impact on intraoperative respiratory compliance (ml cm H2O−1). (c) Impact on intraoperative mean arterial pressure (mm Hg). British Journal of Anaesthesia 2012 109, 493-502DOI: (10.1093/bja/aes338) Copyright © 2012 The Author(s) Terms and Conditions

Fig 3 VCV vs PCV. (a) Impact on intraoperative PaO2/FIO2 ratio (kPa). (b) Impact on intraoperative tidal volume (ml). (c) Impact on intraoperative mean airway pressure (cm H2O). British Journal of Anaesthesia 2012 109, 493-502DOI: (10.1093/bja/aes338) Copyright © 2012 The Author(s) Terms and Conditions