Usability Testing of a Reusable Pulse Oximeter Probe Developed for Health-Care Workers Caring for Children < 5 Years Old in Low-Resource Settings

The American Journal of Tropical Medicine and Hygiene
Nicholas BoydEric D McCollum

Abstract

Hypoxemia measured by pulse oximetry predicts child pneumonia mortality in low-resource settings (LRS). Existing pediatric oximeter probes are prohibitively expensive and/or difficult to use, limiting LRS implementation. Using a human-centered design, we developed a low-cost, reusable pediatric oximeter probe for LRS health-care workers (HCWs). Here, we report probe usability testing. Fifty-one HCWs from Malawi, Bangladesh, and the United Kingdom participated, and seven experts provided reference measurements. Health-care workers and experts measured the peripheral arterial oxyhemoglobin saturation (SpO2) independently in < 5 year olds. Health-care worker measurements were classed as successful if recorded in 5 minutes (or shorter) and physiologically appropriate for the child, using expert measurements as the reference. All expert measurements were considered successful if obtained in < 5 minutes. We analyzed the proportion of successful SpO2 measurements obtained in < 1, < 2, and < 5 minutes and used multivariable logistic regression to predict < 1 minute successful measurements. We conducted four testing rounds with probe modifications between rounds, and obtained 1,307 SpO2 readings. Overall, 67% (876) of measurements were ...Continue Reading

References

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Apr 16, 2013·Transactions of the Royal Society of Tropical Medicine and Hygiene·Eric D McCollumNorman Lufesi
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Oct 12, 2017·Clinical Infectious Diseases : an Official Publication of the Infectious Diseases Society of America·Eric D McCollum, Amy Sarah Ginsburg

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Citations

Mar 27, 2019·Pediatric Pulmonology·Carina KingEric D McCollum

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Clinical Trials Mentioned

NCT02941237

Software Mentioned

Nellcor
Lifebox
Stata

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