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Compliance with alarm limits for pulse oximetry in very preterm infants

Luisa Clucas1, Lex W Doyle, Jennifer Dawson

  • 1Department of Obstetrics and Gynaecology, University of Melbourne, Melbourne, Australia.

Pediatrics
|June 5, 2007
PubMed

Insights

Compliance with hospital guidelines for pulse oximetry alarm limits in preterm infants on oxygen therapy was assessed. The lower alarm limit was frequently set correctly, but the upper limit was often set too high, especially in less vulnerable infants.

Area of Science:

  • Neonatal Medicine
  • Clinical Practice Guidelines
  • Medical Device Monitoring

Background:

  • Pulse oximetry is crucial for monitoring oxygenation in preterm infants.
  • Hospital guidelines exist for setting alarm limits to ensure safe oxygen therapy.
  • Compliance with these guidelines is essential for optimal patient care.

Purpose of the Study:

  • To evaluate adherence to hospital guidelines for pulse oximetry alarm limits in preterm infants receiving oxygen.
  • To identify factors influencing the correct setting of these alarm limits.

Main Methods:

  • Prospective data collection on alarm limits in preterm infants (<32 weeks gestation or <1500g birth weight).
  • Comparison of set alarm limits against hospital guidelines (target 88-92%, alarms at 85% and 94%).
  • Analysis of factors associated with correct alarm limit setting.

Main Results:

  • The lower alarm limit was correctly set in 91.1% of cases.
  • The upper alarm limit was correctly set in only 23.3% of cases, frequently set too high (76.5%) or at 100% (23.8%).
  • Correct upper alarm limit setting was associated with higher risk factors like lower birth weight and need for ventilation.

Conclusions:

  • Current guidelines for upper pulse oximeter alarm limits in infants on oxygen therapy may be inconsistently followed.
  • Compliance with lower alarm limits appears better than for upper limits.
  • Higher-risk infants may have a greater likelihood of appropriately set upper alarm limits.
Abstract

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