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Postoperative apnoea in infants

C Sims1, C M Johnson

  • 1Department of Anaesthesia, Princess Margaret Hospital for Children, Subiaco, Western Australia.

Anaesthesia and Intensive Care
|February 1, 1994
PubMed
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Postoperative apnea affects about 30% of former preterm infants after minor surgery. Postconceptual age is the key factor, with risk decreasing as age increases.

Area of Science:

  • Pediatric Anesthesiology
  • Neonatal Surgery
  • Respiratory Physiology

Background:

  • Postoperative apnea is a significant concern in infants following general anesthesia.
  • Previous studies have focused on various infant populations and risk factors.

Purpose of the Study:

  • To review and synthesize existing evidence on postoperative apnea in former preterm infants undergoing minor surgery.
  • To identify risk factors and potential interventions for reducing apnea incidence.

Main Methods:

  • Systematic review of past studies on postoperative apnea in infants.
  • Prospective analysis of 200 former preterm infants undergoing minor surgery under general anesthesia.
  • Analysis of patient characteristics and historical data for risk association.

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Main Results:

  • Apnea incidence is approximately 30% in former preterm infants, inversely related to postconceptual age.
  • Term infants have a very low incidence of postoperative apnea.
  • Apnea typically occurs within 12 hours post-surgery; limited data exists beyond this period.
  • Factors like prior apnea, bronchopulmonary dysplasia, anemia, or neurological disease may increase risk, but evidence is weak.
  • Postconceptual age is the only reliable predictor for high-risk groups.

Conclusions:

  • Evidence supporting interventions like spinal anesthesia or methylxanthines to reduce apnea is limited.
  • Recommendations for surgical timing and monitoring in former preterm infants require more data.
  • Cautious recommendations are necessary due to the paucity of robust data.