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Related Experiment Videos

Development of airway function in infancy after preterm delivery.

Ah-Fong Hoo1, Carol Dezateux, Matthias Henschen

  • 1Portex Anaesthesia, Intensive Therapy and Respiratory Medicine Unit, Centre for Paediatric Epidemiology and Biostatistics, Institute of Child Health and Great Ormond Street Hospital NHS Trust, London, United Kingdom.

The Journal of Pediatrics
|November 1, 2002
PubMed
Summary

Preterm infants without respiratory issues show declining airway function by 1 year, indicating altered development. Airway function tracked consistently from early infancy to 1 year.

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Area of Science:

  • Pediatric Pulmonology
  • Neonatal Research
  • Respiratory Physiology

Background:

  • Preterm birth can impact long-term respiratory health.
  • Assessing airway function in healthy preterm infants is crucial for understanding developmental trajectories.
  • Neonatal respiratory disease is a known risk factor for later airway issues.

Purpose of the Study:

  • To evaluate airway function at 1 year in preterm infants.
  • To compare 1-year airway function with measurements taken shortly after birth.
  • To investigate the impact of preterm delivery on airway development in the absence of neonatal respiratory disease.

Main Methods:

  • Recruited preterm infants born at <=36 weeks gestational age without neonatal ventilatory support.
  • Measured maximal expiratory flow at functional residual capacity (V'(maxFRC)) around 3 weeks and at a corrected age of 1 year.

Related Experiment Videos

  • Expressed V'(maxFRC) as Z scores using sex-specific prediction equations.

    • Main Results:

    • Infant V'(maxFRC) Z scores were normal shortly after birth (mean Z score: -0.06).
    • By 1 year, V'(maxFRC) Z scores significantly decreased (mean change: -1.94).
    • V'(maxFRC) Z scores at 3 weeks strongly correlated with those at 1 year (Spearman's rho = 0.64).

    Conclusions:

    • Airway function demonstrates significant tracking during the first year of life.
    • Preterm delivery is linked to altered airway development in early infancy, even without neonatal respiratory disease.
    • Early airway measurements can predict later function in preterm infants.