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. 2006 Mar 8;6:3. doi: 10.1186/1472-6793-6-3

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Copyright © 2006 Catron 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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Changes in arterial blood gases over 8 hours for protocol 1. Mean changes over 8 hours, measured every 2 hours (protocol 1): (a) pH, (b) PCO₂, (c) PO₂, (d) Base Excess (BE). Note the different scales. PO₂, pH, and BE show changes outside the error range for the blood analyzer. However, PCO₂variations are within the range of instrument error. Ranges represent ± 1 SD.