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Operational Evaluation of Pulse Oximetry in NICU Patients with Arterial Access

Abstract

OBJECTIVE: To investigate pulse oximetry in neonates who require arterial access as represented by the clinical data recorded to manage their care.

STUDY DESIGN: Analysis of simultaneous SpO2 and SaO2 from: 7-year historical NICU data (N=31,905); 4-month prospective NICU data (N=566); verification data using two hemoximeters (N=52); and NICU data from two collaborating centers (N=95 and 168). The bias function (SpO2−SaO2) was regressed against the measured “gold” standard, SaO2.

RESULTS: A significant negative correlation was found for each of the data sets between the bias function and SaO2. This bias was similar for devices from several manufacturers (Datex-Ohmeda, Masimo, Nellcor, and Spacelabs). Maximum operational performance occurred with peaks between 92 and 97% SaO2, but declined markedly above and below this narrow range. In all, 71 to 95% of patients exhibited data with significant bias.

CONCLUSION: These operational data suggest that with the methodology and devices currently in use, SpO2 values in most all neonates who require arterial lines inaccurately correlate with measured arterial saturation.

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These data were presented in part as a Late Breaker Abstract at the Pediatric Academic Societies mdash; Society for Pediatric Research Meeting, May 2002, Baltimore, MD, USA. An FDA Medical Device Report (#1024269) was filed with Med Watch on March 5, 2002.

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Gerstmann, D., Berg, R., Haskell, R. et al. Operational Evaluation of Pulse Oximetry in NICU Patients with Arterial Access. J Perinatol 23, 378–383 (2003). https://doi.org/10.1038/sj.jp.7210944

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