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Evaluation of a pulse oximeter sensor tester

Dugani, Shuba, Hodzovic, Iljaz, Sindhakar, Seema, Nadra, Aida, Dunstan, Clare, Wilkes, Anthony Richard and Mecklenburgh, John 2011. Evaluation of a pulse oximeter sensor tester. Journal of Clinical Monitoring and Computing 25 (3) , pp. 163-170. 10.1007/s10877-011-9283-3

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Abstract

Objective The Lightman is intended to test the optical and electrical properties of a pulse oximeter probe including the wavelength of the light emitting diode by means of a micro spectrometer. The aim of this study was to evaluate the ability of the Lightman to detect faulty pulse oximeter finger probes by testing the accuracy of the wavelength of the light emitting diode in isolation from the monitor. Methods The pulse oximeter measurements of arterial oxygen saturation from the “accurate” and “inaccurate” probes, as identified by the Lightman, were compared with arterial saturation determined by a co-oximeter. Data was analysed from 63 sets of measurements. In addition, we conducted a national survey to determine the testing procedures used by the Biomedical Engineering departments to evaluate the accuracy of pulse oximeter devices. Results The bias [95% limits of agreement] for accurate, over-reading and under-reading probes were 0.17% [3.6 to −3.3], 1.44% [5.4 to −2.5] and −1.6% [2.6 to −5.8] respectively. The response rate to the national survey was 75% (142/189); a pulse oximeter tester was used by 93/142 (65%) trusts. Conclusions Our findings suggest that the Lightman can detect faulty probes and predict reasonably accurately the direction of the probe’s error. The Lightman may be considered as a useful tool to assess the accuracy of pulse oximeters. The national survey highlighted a wide variation in the testing procedure utilised to evaluate the accuracy of pulse oximeters. Introduction of guidelines regarding the testing procedure would promote a uniform practice.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Medicine
Subjects: R Medicine > R Medicine (General)
Uncontrolled Keywords: measurement techniques, equipment, pulse oximetry
Publisher: Springer
ISSN: 1387-1307
Date of First Compliant Deposit: 17 June 2019
Last Modified: 06 Feb 2020 21:34
URI: http://orca-mwe.cf.ac.uk/id/eprint/23356

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