Cited by 120Non-Invasive Vital Sign MonitoringNeonatal Respiratory Health ResearchNeonatal Health and Biochemistry

Racial discrepancy in pulse oximeter accuracy in preterm infants

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Vesoulis, Zachary, Tims, Anna, Lodhi, Hafsa, Lalos, Natasha, Whitehead, Halana·2022·Journal of Perinatology

Abstract

Objective Pulse oximetry is commonly used in Neonatology, however recent adult data suggest racial disparity in accuracy, with overestimation of oxygen saturation for Black patients.Study design Black and White infants <32 weeks gestation underwent simultaneous arterial blood gas and pulse oximetry measurement. Error by race was examined using mean bias, A rms, Bland-Altman, and linear/non-linear analysis.Results A total of 294 infants (124 Black, 170 White) were identified with mean GA of 25.8 ± 2.1 weeks and mean BW of 845 ± 265 grams, yielding 4387 SaO 2-SpO 2 datapoints. SpO 2 overestimation, measured by mean bias, was 2.4-fold greater for Black infants and resulted in greater occult hypoxemia (SpO 2 > 90% when SaO 2 < 85%; 9.2% vs. 7.7% of samples). Sensitivity and specificity for detection of true hypoxemia were similar between groups (39 vs. 38%; 81 vs. 78%).Conclusion There is a modest but consistent difference in SpO 2 error between Black and White infants, with increased incidence of occult hypoxemia in Black infants.

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  • More recent studies have revealed that dark skin pigmentation influences the accuracy and performance of pulse oximeter devices, resulting in overestimations, with increased incidence in the risk for occult hypoxemia (SO2<88% despite normal SpO2>92%).

    “More recent studies have also revealed that dark skin pigmentation influences the accuracy and performance of pulse oximeters devices, resulting in overestimations [17,49,50,51,52,53] with increased incidence in the risk for occult hypoxemia (SO2<88% despite normal SpO2>92%) [54,55].”
  • Recent studies have shown a positive bias in oxygen saturation measurements in patients with darkly pigmented skin, particularly under low saturation conditions.

    “Recent studies have shown a positive bias in oxygen saturation measurements in patients with darkly pigmented skin, particularly under low saturation conditions.”
  • Ancestry descriptors were used in 11 studies (29.73%).

    “On the other hand, ancestry descriptors were used in 11 studies (29.73%) [17,21,23,24,41,51,53,61,75,82,93]”
  • Pulse oximetry performance in the dark-skinned population may lead to overestimations with increased incidence of occult hypoxemia and risk of negative health effects from diseases like COVID-19.

    “To sum up, we conclude that pulse oximetry performance in the dark-skinned population may lead to overestimations with increased incidence of occult hypoxemia and risk of negative health effects from diseases like COVID-19 [51,53,55].”
  • Two studies found a small but consistent skin pigmentation disparity in SpO2 measurements with values that may be falsely high in dark-skinned preterm infants.

    “The other two studies found a small but consistent skin pigmentation disparity in SpO2 measurements with values that may be falsely high in dark-skinned preterm infants [51,74].”

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Research works printed but not linked: 1

  1. [32]Montagna W, Prota G, Kenney JA. Jr Black Skin: Structure and Function. Elsevier Science: Saint Louis, 2014. http://qut.eblib.com.au/patron/FullRecord.aspx?p=1190974 (accessed 5 Feb 2021).

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Authors
Vesoulis, Z., Tims, A., Lodhi, H., Lalos, N., & Whitehead, H.
Affiliations
Washington University in St. Louis (US)
Corresponding author
Vesoulis, Zachary
Venue
Journal of Perinatology
Published
2021-10-12
Volume
42
Issue
1
Pages
79-85
ISSN
  • 0743-8346 (ISSN-L)
  • 1476-5543
OpenAlex
W3205068012
Cited by
120
References
65
Citations by year
2026: 10 · 2025: 23 · 2024: 24 · 2023: 25 · 2022: 37
FWCI
6.53
Type
journal article
Language
en
Open access
Locations
  • Journal of Perinatology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
U.S. Department of Health & Human Services | NIH | National Institute of Neurological Disorders and Stroke (K23 NS111086)
Topics
  • Physical Sciences › Engineering › Biomedical Engineering › Non-Invasive Vital Sign Monitoring
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Neonatal Respiratory Health Research
  • Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Neonatal Health and Biochemistry
Keywords
pulse oximetry, racial disparities, preterm infants, oxygen saturation, hypoxemia detection, Black infants, measurement accuracy, neonatal monitoring
MeSH terms
Adult, Hypoxia, Blood Gas Analysis, Humans, Infant, Newborn, Infant, Premature, Oximetry, Oxygen

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