• Heart Lung · Jan 2011

    Accuracy and precision of buccal pulse oximetry.

    • Marla J De Jong, Joseph Schmelz, Karen Evers, Patricia Bradshaw, Kathleen McKnight, and Elizabeth Bridges.
    • TriService Nursing Research Program, Uniformed Services University of the Health Sciences, Bethesda, Maryland 20814, USA. mdejong@aol.com
    • Heart Lung. 2011 Jan 1;40(1):31-40.

    ObjectiveWe sought to describe the accuracy and precision of buccal pulse oximetry (SbpO(2)) compared with arterial oxygen saturation (SaO(2)) and pulse oximetry (SpO(2)) in healthy adults at normoxemia and under 3 induced hypoxemic conditions.MethodsIn this prospective, correlational study, SbpO(2), SaO(2), and SpO(2) values were recorded at normoxemia and at three hypoxemic conditions (SpO(2)=90%, 80%, and 70%) for 53 healthy, nonsmoking adults who were without cardiac or pulmonary disease, baseline hypoxemia, peripheral edema, dyshemoglobinemia, and fever. Bland-Altman analyses were used to assess agreement and precision between SbpO(2) and SaO(2) measures and between SbpO(2) and SpO(2) measures. Data were adjusted to account for a lag time between buccal and finger sites.ResultsWhen comparing SbpO(2) and SaO(2) values, mean differences of -1.8%, .3%, 2.4%, and 2.6% were evident at the normoxemia, 90%, 80%, and 70% levels, respectively. When comparing SbpO(2) and SpO(2) values, the mean differences were -1.4%, .1%, 3.3%, and 4.7% at the normoxemia, 90%, 80%, and 70% levels, respectively. The SbpO(2) and SaO(2) values met a priori precision criteria (1.6%; 95% confidence limit, -4.9% to 1.3%) at normoxemia. The SbpO(2) and SpO(2) values met precision criteria at normoxemia (1.5%; 95% confidence limit, -4.4% to 1.5%) and 90% (1.9%; 95% confidence limit, -3.6% to 3.8%) conditions, but exceeded precision criteria at the other tested conditions. On average, SpO(2) lagged 21 seconds behind SbpO(2).ConclusionBuccal oximetry is an inaccurate and imprecise method of assessing SpO(2) when oxygen saturation is <90%. The divergence between SbpO(2) and both SaO(2) or SpO(2) values increased as hypoxemia worsened. The buccal method overestimated oxygen saturation in proportion to the degree of hypoxemia. Such overestimates may lead nurses to conclude falsely that a patient's arterial oxygen saturation is acceptable when further assessment or intervention is warranted.Published by Mosby, Inc.

      Pubmed     Full text   Copy Citation     Plaintext  

      Add institutional full text...

    Notes

     
    Knowledge, pearl, summary or comment to share?
    300 characters remaining
    help        
    You can also include formatting, links, images and footnotes in your notes
    • Simple formatting can be added to notes, such as *italics*, _underline_ or **bold**.
    • Superscript can be denoted by <sup>text</sup> and subscript <sub>text</sub>.
    • Numbered or bulleted lists can be created using either numbered lines 1. 2. 3., hyphens - or asterisks *.
    • Links can be included with: [my link to pubmed](http://pubmed.com)
    • Images can be included with: ![alt text](https://bestmedicaljournal.com/study_graph.jpg "Image Title Text")
    • For footnotes use [^1](This is a footnote.) inline.
    • Or use an inline reference [^1] to refer to a longer footnote elseweher in the document [^1]: This is a long footnote..

    hide…

What will the 'Medical Journal of You' look like?

Start your free 21 day trial now.

We guarantee your privacy. Your email address will not be shared.