| Accuracy of pulse oximetry in pigmented patients. | |
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MedLine Citation:
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PMID: 8914569 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: Prospective assessment of the accuracy of three pulse oximeters and two probe sites in darkly pigmented critically ill patients under clinical conditions. PATIENTS AND METHODS: One hundred consecutive, darkly pigmented critically ill adult patients with arterial lines in situ were studied. Patients were excluded if the haemoglobin concentration was less than 7 g/dl and carboxyhaemoglobin or methaemoglobin levels exceeded 2%. Pigmentation was objectively quantified with a portable EEL reflectance spectrophotometer (Evans Electroselenium Company, Diffusion Systems Limited, London). Reflectance was measured at nine wavelengths. RESULTS: The degree of pigmentation as measured by percentage reflectance closely matched that of a control group of black Africans from a pigmentation study. The limits of agreement (2.6% to 5.8%), precision and bias values between pulse oximeter and co-oximeter readings fell within a narrow range. The 95% confidence intervals of the limits of agreement reflected a small variation in the difference between pulse oximeter and co-oximeter readings. These small differences were not clinically significant in the pigmented patients who were enrolled in the study. CONCLUSION: The accuracy of pulse oximetry is not adversely affected by skin pigmentation, and it remains a useful oxygenation monitoring device in darkly pigmented patients. |
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Authors:
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P A Bothma; G M Joynt; J Lipman; H Hon; B Mathala; J Scribante; J Kromberg |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: South African medical journal = Suid-Afrikaanse tydskrif vir geneeskunde Volume: 86 ISSN: 0256-9574 ISO Abbreviation: S. Afr. Med. J. Publication Date: 1996 May |
Date Detail:
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Created Date: 1997-02-19 Completed Date: 1997-02-19 Revised Date: 2004-11-17 |
Medline Journal Info:
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Nlm Unique ID: 0404520 Medline TA: S Afr Med J Country: SOUTH AFRICA |
Other Details:
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Languages: eng Pagination: 594-6 Citation Subset: IM |
Affiliation:
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Intensive Care Unit, Baragwanath Hospital, Johannesburg. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Humans Oximetry* / instrumentation, methods, standards Oxygen / blood Prospective Studies Skin Pigmentation* |
| Chemical | |
Reg. No./Substance:
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7782-44-7/Oxygen |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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