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Prematurity is associated with abnormal airway function in childhood

M Galdès-Sebaldt1, J R Sheller, J Grogaard

  • 1Department of Pediatrics, Vanderbilt University, Nashville, Tennessee 37232.

Pediatric Pulmonology
|January 1, 1989
PubMed

Insights

Premature birth, not hyaline membrane disease, causes lasting lung problems and increased airway reactivity in children. This study followed 49 children aged 10-13, assessing pulmonary function and airway hyperresponsiveness.

Area of Science:

  • Pediatric Pulmonology
  • Neonatal Medicine
  • Respiratory Physiology

Background:

  • Prematurity and hyaline membrane disease (HMD) are known risk factors for adverse respiratory outcomes.
  • Long-term effects on pulmonary function and airway reactivity in school-aged children require further investigation.

Purpose of the Study:

  • To assess the long-term impact of prematurity and HMD on lung function and airway hyperresponsiveness.
  • To differentiate the effects of prematurity from HMD on respiratory health in children aged 10-13 years.

Main Methods:

  • Pulmonary function tests (PFTs) and methacholine (MCh) challenges were conducted.
  • 49 prematurely born children were grouped by birth weight (<1500g vs. >1500g) and HMD status.
  • Results were compared to 27 age-matched, term-born controls.

Main Results:

  • Children born weighing <1500g (Groups I & II) showed significantly altered FEV1 and RV/TLC ratios compared to controls, irrespective of HMD.
  • Group I (low birth weight, no HMD) exhibited reduced FEF25-75%, Vmax50%, and DLCO.
  • Increased airway reactivity was observed in Groups I and II, with higher percentages experiencing significant FEV1 and SGaw drops post-MCh challenge.

Conclusions:

  • Prematurity, rather than HMD itself, is the primary driver of long-term pulmonary abnormalities.
  • Premature birth leads to persistent deficits in lung function and increased nonspecific airway reactivity in children.
  • Early-life respiratory insults from prematurity have lasting consequences on respiratory health.

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