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Pulse oximetry screening for critical congenital heart defects in asymptomatic newborn babies: a systematic review

Shakila Thangaratinam1, Kiritrea Brown2, Javier Zamora3

  • 1Women's Health Research Unit, Centre for Primary Care and Public Health, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK.

Lancet (London, England)
|May 5, 2012
PubMed

Insights

Pulse oximetry effectively screens newborn babies for critical congenital heart defects. This method demonstrates high specificity and moderate sensitivity, supporting its use in universal newborn screening programs.

Area of Science:

  • Neonatal Medicine
  • Cardiology
  • Diagnostic Screening

Background:

  • Critical congenital heart defects (CCHDs) require early detection for improved infant outcomes.
  • Pulse oximetry is a non-invasive method to assess oxygen saturation in newborns.
  • Screening asymptomatic newborns can identify CCHDs before clinical manifestation.

Purpose of the Study:

  • To evaluate the performance of pulse oximetry in detecting critical congenital heart defects in asymptomatic newborns.
  • To systematically review existing evidence on the accuracy of pulse oximetry for CCHD screening.

Main Methods:

  • Systematic review of studies published between 1951 and 2011, searching Medline, Embase, Cochrane Library, and Scisearch.
  • Inclusion criteria focused on studies assessing pulse oximetry accuracy for CCHDs in asymptomatic newborns.
  • Data extraction included sensitivity, specificity, and false-positive rates; analysis employed a hierarchical receiver operating characteristic curve with a random effects model.

Main Results:

  • Analysis of 13 studies involving 229,421 newborns.
  • Overall sensitivity for pulse oximetry was 76.5% (95% CI 67.7-83.5).
  • Exceptional specificity of 99.9% (99.7-99.9) and a low false-positive rate of 0.14% (0.06-0.33) were observed. Screening after 24 hours of birth yielded a significantly lower false-positive rate (0.05%) compared to before 24 hours (0.50%).

Conclusions:

  • Pulse oximetry is a highly specific screening tool for critical congenital heart defects in newborns.
  • The test demonstrates moderate sensitivity, meeting established criteria for universal screening.
  • Timing of pulse oximetry screening (after 24 hours) can optimize its performance by reducing false positives.
Abstract

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