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Minimally Invasive Murine Laryngoscopy for Close-Up Imaging of Laryngeal Motion During Breathing and Swallowing
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Defining normal upper airway motion in asymptomatic children during sleep by means of cine MR techniques

Lane F Donnelly1, Keith A Casper, Bin Chen

  • 1Department of Radiology, Children's Hospital Medical Center, 3333 Burnet Ave, Cincinnati, OH 45229-3039, USA. lane.donnelly@chmcc.org

Radiology
|April 4, 2002
PubMed

Insights

Dynamic upper airway motion is common in sleeping children, but hypopharyngeal collapse is not normal. This study defines normal airway dynamics in children using advanced imaging techniques.

Area of Science:

  • Pediatric imaging
  • Sleep medicine
  • Respiratory physiology

Background:

  • Understanding normal upper airway dynamics during sleep is crucial for diagnosing sleep-disordered breathing in children.
  • Previous studies have limited data on normal airway motion in pediatric populations.

Purpose of the Study:

  • To characterize normal upper airway motion in asymptomatic children during sleep.
  • To utilize dynamic cine magnetic resonance (MR) imaging for this assessment.
  • To establish baseline data for pediatric airway physiology during sleep.

Main Methods:

  • A sagittal midline cine MR sequence was performed on children undergoing brain MR with sedation.
  • Upper airway motion (nasopharynx, oropharynx, hypopharynx) was categorized.
  • Maximal diameter and size changes were quantified; mouth position was noted.

Main Results:

  • Dynamic motion was observed in the nasopharynx (36%) and hypopharynx (49%).
  • Oropharyngeal collapse occurred in 66% of patients; hypopharyngeal collapse was not observed.
  • Mouth position correlated significantly with dynamic motion in the nasopharynx and oropharynx.

Conclusions:

  • Asymptomatic children frequently exhibit dynamic upper airway motion during sleep.
  • Hypopharyngeal collapse is not a normal finding in sleeping children.
  • Dynamic cine MR provides valuable insights into pediatric airway function during sleep.
Abstract

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