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. 2006 Jun 1;10(3):R85. doi: 10.1186/cc4936

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Copyright © 2006 Roch et al.; licensee BioMed Central Ltd.

This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Evolution over time of Pao₂/Fio₂ratio following PV measurements and during a control period. The PV measurements were taken using the super syringe (PV_SS) and constant flow method (PV_CF). Data are expressed as percentage increase or decrease in Pao₂/Fio₂ratio at 5, 15, 30 and 60 minutes as compared with values before PV measurement or the control period. Dashed lines represent 20% increase and decrease as compared with before PV measurement. Fio₂, fractional inspired oxygen; Pao₂, partial arterial oxygen tension; PV, pressure-volume.