M. Servei-de, . Intensiva, C. Hospital-de-sant-pau, . Sant-quinti, M. Amato et al., Boulevard de l'Hôpital, Paris 75014, France. 9 INSERM U-955 10 Intensive Care Department References 1 Effect of a protective-ventilation strategy on mortality in the acute respiratory distress syndrome, N Engl J Med, vol.89, issue.338, pp.347-54, 1998.

L. Gattinoni, P. Caironi, M. Cressoni, D. Chiumello, V. Ranieri et al., Lung Recruitment in Patients with the Acute Respiratory Distress Syndrome, New England Journal of Medicine, vol.354, issue.17, pp.1775-86, 2006.
DOI : 10.1056/NEJMoa052052

V. Ranieri, P. Suter, C. Tortorella, D. Tullio, R. Dayer et al., Effect of Mechanical Ventilation on Inflammatory Mediators in Patients With Acute Respiratory Distress Syndrome, JAMA, vol.282, issue.1, pp.54-61, 1999.
DOI : 10.1001/jama.282.1.54

J. Rouby, J. Constantin, R. De, A. Girardi, C. Zhang et al., Mechanical Ventilation in Patients with Acute Respiratory Distress Syndrome, Anesthesiology, vol.101, issue.1, pp.228-262, 2004.
DOI : 10.1097/00000542-200407000-00033

P. Terragni, G. Rosboch, A. Tealdi, E. Corno, E. Menaldo et al., Tidal Hyperinflation during Low Tidal Volume Ventilation in Acute Respiratory Distress Syndrome, American Journal of Respiratory and Critical Care Medicine, vol.175, issue.2, pp.160-166, 2007.
DOI : 10.1164/rccm.200607-915OC

N. Patroniti, M. Saini, A. Zanella, D. Weismann, S. Isgro et al., Measurement of end-expiratory lung volume by oxygen washin???washout in controlled and assisted mechanically ventilated patients, Intensive Care Medicine, vol.113, issue.12, pp.2235-2275, 2008.
DOI : 10.1007/s00134-008-1218-1

S. Maisch, S. Boehm, D. Weismann, H. Reissmann, M. Beckmann et al., Determination of functional residual capacity by oxygen washin-washout: a validation study, Intensive Care Medicine, vol.46, issue.Suppl 16, pp.912-928, 2007.
DOI : 10.1007/s00134-007-0578-2

D. Chiumello, M. Cressoni, M. Chierichetti, F. Tallarini, M. Botticelli et al., Nitrogen washout/washin, helium dilution and computed tomography in the assessment of end expiratory lung volume, Critical Care, vol.12, issue.6, p.150, 2008.
DOI : 10.1186/cc7139

C. Olegard, S. Sondergaard, E. Houltz, S. Lundin, and O. Stenqvist, Estimation of Functional Residual Capacity at the Bedside Using Standard Monitoring Equipment: A Modified Nitrogen Washout/Washin Technique Requiring a Small Change of the Inspired Oxygen Fraction, Anesthesia & Analgesia, vol.101, issue.1, pp.206-218, 2005.
DOI : 10.1213/01.ANE.0000165823.90368.55

L. Brewer, J. Orr, M. Sherman, E. Fulcher, and B. Markewitz, Measurement of functional residual capacity by modified multiple breath nitrogen washout for spontaneously breathing and mechanically ventilated patients, British Journal of Anaesthesia, vol.107, issue.5, pp.796-805, 2011.
DOI : 10.1093/bja/aer220

. Dellamonica, Critical Care, p.294, 2011.

J. Dellamonica, N. Lerolle, C. Sargentini, G. Beduneau, D. Marco et al., PEEP-induced changes in lung volume in acute respiratory distress syndrome. Two methods to estimate alveolar recruitment, Intensive Care Medicine, vol.38, issue.10, pp.1595-1604, 2011.
DOI : 10.1007/s00134-011-2333-y

A. Artigas, G. Bernard, J. Carlet, D. Dreyfuss, L. Gattinoni et al., The American-European consensus conference on ARDS, Part 2, Intensive Care Medicine, vol.150, issue.Suppl 6A, pp.378-98, 1998.
DOI : 10.1007/s001340050585

L. Malbouisson, C. Busch, L. Puybasset, Q. Lu, P. Cluzel et al., Role of the Heart in the Loss of Aeration Characterizing Lower Lobes in Acute Respiratory Distress Syndrome, American Journal of Respiratory and Critical Care Medicine, vol.161, issue.6, pp.2005-2017, 2000.
DOI : 10.1164/ajrccm.161.6.9907067

J. Rouby, L. Puybasset, A. Nieszkowska, and Q. Lu, Acute respiratory distress syndrome: Lessons from computed tomography of the whole lung, Critical Care Medicine, vol.31, issue.Supplement, pp.285-95, 2003.
DOI : 10.1097/01.CCM.0000057905.74813.BC

H. Heinze and W. Eichler, Measurements of functional residual capacity during intensive care treatment: the technical aspects and its possible clinical applications, Acta Anaesthesiologica Scandinavica, vol.53, issue.9, pp.1121-1151, 2009.
DOI : 10.1111/j.1399-6576.2009.02076.x

I. Bikker, T. Scohy, J. Ad, J. Bakker, and D. Gommers, Measurement of end-expiratory lung volume in intubated children without interruption of mechanical ventilation, Intensive Care Medicine, vol.17, issue.10, pp.1749-53, 2009.
DOI : 10.1007/s00134-009-1579-0

I. Bikker, J. Van-bommel, R. Miranda, D. Bakker, J. Gommers et al., End-expiratory lung volume during mechanical ventilation: a comparison with reference values and the effect of positive end-expiratory pressure in intensive care unit patients with different lung conditions, Critical Care, vol.12, issue.6, p.145, 2008.
DOI : 10.1186/cc7125

T. Scohy, I. Bikker, J. Hofland, P. De-jong, A. Bogers et al., Alveolar recruitment strategy and PEEP improve oxygenation, dynamic compliance of respiratory system and end-expiratory lung volume in pediatric patients undergoing cardiac surgery for congenital heart disease, Pediatric Anesthesia, vol.101, issue.12, pp.1207-1219, 2009.
DOI : 10.1111/j.1460-9592.2009.03177.x

A. Mercat, J. Richard, B. Vielle, S. Jaber, D. Osman et al., Positive End-Expiratory Pressure Setting in Adults With Acute Lung Injury and Acute Respiratory Distress Syndrome, JAMA, vol.299, issue.6, pp.646-55, 2008.
DOI : 10.1001/jama.299.6.646

J. Katz, G. Ozanne, S. Zinn, and H. Fairley, Time Course and Mechanisms of Lung-volume Increase with PEEP in Acute Pulmonary Failure, Anesthesiology, vol.54, issue.1, pp.9-16, 1981.
DOI : 10.1097/00000542-198101000-00003

J. Bland and D. Altman, Statistical methods for assessing agreement between two methods of clinical measurement, International Journal of Nursing Studies, vol.47, issue.8, pp.307-317, 1986.
DOI : 10.1016/j.ijnurstu.2009.10.001

L. Malbouisson, J. Muller, J. Constantin, Q. Lu, L. Puybasset et al., Computed Tomography Assessment of Positive End-expiratory Pressure-induced Alveolar Recruitment in Patients with Acute Respiratory Distress Syndrome, American Journal of Respiratory and Critical Care Medicine, vol.163, issue.6, pp.1444-50, 2001.
DOI : 10.1164/ajrccm.163.6.2005001

D. Chiumello, E. Carlesso, P. Cadringher, P. Caironi, F. Valenza et al., Lung Stress and Strain during Mechanical Ventilation for Acute Respiratory Distress Syndrome, American Journal of Respiratory and Critical Care Medicine, vol.178, issue.4, pp.346-55, 2008.
DOI : 10.1164/rccm.200710-1589OC

N. Patroniti, G. Bellani, B. Cortinovis, G. Foti, E. Maggioni et al., Role of absolute lung volume to assess alveolar recruitment in acute respiratory distress syndrome patients, Critical Care Medicine, vol.38, issue.5, pp.1300-1307, 2010.
DOI : 10.1097/CCM.0b013e3181d8cb51

S. Vieira, L. Puybasset, Q. Lu, J. Richecoeur, P. Cluzel et al., A Scanographic Assessment of Pulmonary Morphology in Acute Lung Injury, American Journal of Respiratory and Critical Care Medicine, vol.159, issue.5, pp.1612-1635, 1999.
DOI : 10.1164/ajrccm.159.5.9805112

L. Puybasset, P. Gusman, J. Muller, P. Cluzel, P. Coriat et al., Regional distribution of gas and tissue in acute respiratory distress syndrome. III. Consequences for the effects of positive end-expiratory pressure, Intensive Care Medicine, vol.26, issue.9, pp.1215-1242, 2000.
DOI : 10.1007/s001340051340

P. Pelosi, M. Cereda, G. Foti, M. Giacomini, and A. Pesenti, Alterations of lung and chest wall mechanics in patients with acute lung injury: effects of positive end-expiratory pressure., American Journal of Respiratory and Critical Care Medicine, vol.152, issue.2, pp.531-538, 1995.
DOI : 10.1164/ajrccm.152.2.7633703

M. Dessap, A. Charron, C. Devaquet, J. Aboab, J. Jardin et al., Impact of acute hypercapnia and augmented positive end-expiratory pressure on right ventricle function in severe acute respiratory distress syndrome, Intensive Care Medicine, vol.299, issue.11, pp.1850-1858, 2009.
DOI : 10.1007/s00134-009-1569-2

URL : https://hal.archives-ouvertes.fr/inserm-00429687

S. Grasso, V. Fanelli, A. Cafarelli, R. Anaclerio, M. Amabile et al., Effects of High versus Low Positive End-Expiratory Pressures in Acute Respiratory Distress Syndrome, American Journal of Respiratory and Critical Care Medicine, vol.171, issue.9, pp.1002-1010, 2005.
DOI : 10.1164/rccm.200407-940OC

S. Vieira, L. Puybasset, J. Richecoeur, Q. Lu, P. Cluzel et al., A Lung Computed Tomographic Assessment of Positive End-Expiratory Pressure???induced Lung Overdistension, American Journal of Respiratory and Critical Care Medicine, vol.158, issue.5, pp.1571-1578, 1998.
DOI : 10.1164/ajrccm.158.5.9802101

L. Gall, J. Lemeshow, S. Saulnier, and F. , A New Simplified Acute Physiology Score (SAPS II) Based on a European/North American Multicenter Study, JAMA: The Journal of the American Medical Association, vol.270, issue.24, pp.2957-63, 1993.
DOI : 10.1001/jama.1993.03510240069035