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Changes in nasal airway dimensions in infancy

P G Djupesland1, B Lyholm

  • 1Department of Otorhinolaryngology, Ullevaal University Hospital, Oslo, Norway.

Acta Oto-Laryngologica
|December 31, 1998
PubMed
Summary

Nasal airway dimensions in infants significantly increase during the first year of life. Acoustic rhinometry reveals growth is primarily linked to body size, not gender, and can detect congestion effects.

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Area of Science:

  • Pediatric Otolaryngology
  • Respiratory Physiology
  • Infant Development

Background:

  • Nasal airway geometry is crucial for infant respiration.
  • Understanding nasal airway growth and maturation is essential for diagnosing respiratory conditions.
  • Previous studies on infant nasal airway dimensions are limited.

Purpose of the Study:

  • To assess the dimensional growth and maturation of nasal airway geometry in healthy infants.
  • To evaluate the utility of acoustic rhinometry in infant nasal airway assessment.
  • To identify factors influencing nasal airway dimensions, including gender and nasal congestion.

Main Methods:

  • Continuous wide-band noise acoustic rhinometry was performed on 39 infants at 1 year of age.
  • A specialized infant-optimized probe was utilized.
  • Measurements included minimal cross-sectional area, anterior nasal airway volume, and distance to minimal cross-sectional area.

Main Results:

  • Significant increases in nasal airway dimensions were observed during the first year of life.
  • Total minimal cross-sectional area increased by 67%, anterior volume by 36%, and distance to minimum area by 19%.
  • Gender differences in nasal dimensions were attributed to body size. Nasal congestion was associated with reduced airway volume and minimal cross-sectional area.

Conclusions:

  • Acoustic rhinometry with an infant-optimized probe is effective for studying infant upper airway physiology.
  • Nasal airway dimensions grow significantly in the first year, influenced by body size.
  • This method can help differentiate between healthy and congested nasal airways in infants.

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