Nasal pulse oximetry overestimates oxygen saturation.
prospective_cohort · Level II
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- Record sourced from PubMed, PMID 2278333.
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Abstract
Ten surgical patients were monitored with nasal and finger pulse oximetry (Nellcor N-200) for five study periods with alternating mouth and nasal breathing and switching of cables and sensors. Nasal pulse oximetry was found to overestimate arterial oxygen saturation by 4.7 (SD 1.4%) (bias and precision).
Medical subject headings
- Nose
- Oximetry
- Oxygen