The performance of a postinduction fentanyl test in identifying severe obstructive sleep apnea syndrome

Ru Wu1, Xuan Wang1, Peijun Zhuang1

  • 1Department of Anesthesiology, Children's Hospital of Fudan University, Shanghai, China.

Paediatric Anaesthesia
|November 20, 2019
PubMed

Insights

A postinduction fentanyl test effectively identifies children with severe obstructive sleep apnea syndrome (OSAS), aiding in safer opioid use during surgery. This test helps predict respiratory risks in pediatric patients undergoing adenotonsillectomy.

Area of Science:

  • Anesthesiology and critical care medicine
  • Pediatric respiratory medicine
  • Sleep medicine

Background:

  • Children with severe obstructive sleep apnea syndrome (OSAS) exhibit heightened sensitivity to opioids.
  • Identifying these children is crucial for minimizing opioid-related risks, yet it remains a clinical challenge.
  • Previous research indicated that fentanyl sensitivity intraoperatively correlates with reduced postoperative opioid requirements.

Purpose of the Study:

  • To assess the efficacy of a postinduction fentanyl test in accurately identifying severe obstructive sleep apnea syndrome (OSAS) in pediatric patients.
  • To determine the sensitivity and specificity of this test compared to polysomnography.

Main Methods:

  • A prospective, observational, assessor-blinded study involved 104 children undergoing elective adenotonsillectomy.
  • A 1 µg/kg intravenous fentanyl dose was administered as a test before intubation in spontaneously breathing, sevoflurane-induced patients.
  • Respiratory rates were monitored pre- and post-fentanyl administration to evaluate the test's diagnostic performance.

Main Results:

  • The postinduction fentanyl test demonstrated a likelihood ratio of 7.2 and an AUC of 0.896 for identifying severe OSAS.
  • A >50% reduction in respiratory rate was established as the pragmatic cut-off, achieving 87% sensitivity and 88% specificity.
  • The test showed high predictive values: 85% positive and 89% negative, for detecting severe OSAS.

Conclusions:

  • The postinduction fentanyl test is a valuable tool with good predictive accuracy for identifying severe OSAS in children.
  • This test can help anticipate early postoperative adverse respiratory events.
  • Findings provide a basis for informed postoperative analgesia strategies in pediatric adenotonsillectomy patients.
Abstract

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