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Endothelial function in children with OSA and the effects of adenotonsillectomy

Kate C C Chan1, Chun T Au1, Ping Chook1

  • 1Department of Pediatrics, The Chinese University of Hong Kong, Shatin, Hong Kong.

Chest
|October 3, 2014
PubMed

Insights

Children with obstructive sleep apnea (OSA) have impaired endothelial function (FMD), but treatment like adenotonsillectomy can reverse this. This study investigated FMD changes in children with OSA before and after treatment.

Area of Science:

  • Pediatric Pulmonology
  • Cardiovascular Health
  • Sleep Medicine

Background:

  • Childhood obstructive sleep apnea (OSA) is linked to potential cardiovascular risks.
  • Endothelial dysfunction, measured by flow-mediated dilation (FMD), is a key indicator of vascular health.
  • The impact of OSA on pediatric endothelial function and treatment effects remains unclear.

Purpose of the Study:

  • To compare FMD in children with OSA versus healthy controls.
  • To assess the effect of OSA treatment on FMD in pediatric patients.

Main Methods:

  • Paired case-control study involving 63 children (6-18 years) with OSA and matched controls.
  • Polysomnography (PSG) confirmed OSA and assessed obstructive apnea hypopnea index (OAHI).
  • Flow-mediated dilation (FMD) measured endothelial function; adenotonsillectomy (AT) was the primary treatment intervention.

Main Results:

  • Children with OSA exhibited significantly lower FMD compared to controls (P=.04).
  • Adenotonsillectomy in OSA patients led to a significant reduction in OAHI (P<.001).
  • Following AT, a significant improvement in FMD was observed in the treatment group (P<.001).

Conclusions:

  • Pediatric OSA is associated with reduced endothelial function (FMD).
  • Adenotonsillectomy effectively improves endothelial function in children with OSA.
  • Treatment reverses endothelial dysfunction in children suffering from OSA.
Abstract

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