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Fig. 3 | Critical Care

Fig. 3

From: Pulse oximetry

Fig. 3

Changes in oxygen saturation measured by pulse oximetry (SpO2) compared with arterial oxygen saturation measured by a CO-oximeter (SaO2) in critically ill patients. The pulse oximeter consistently overestimated the actual changes of SaO2. Reprinted with permission from BioMed Central Ltd [8]

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