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Lung function in infants after repair of congenital diaphragmatic hernia

Anastassios C Koumbourlis1, Jen Tien Wung, Charles J Stolar

  • 1Division of Pediatric Critical Care and Pulmonology, Morgan Stanley Children's Hospital of New York at Columbia University Medical Center, New York, NY 10032, USA. akoumbou@lij.edu

Journal of Pediatric Surgery
|October 3, 2006
PubMed

Insights

Infants with congenital diaphragmatic hernia (CDH) show improving lung function after surgical repair. Lung growth and function tests normalize significantly between 6 and 24 months, indicating recovery in children with CDH.

Area of Science:

  • Pediatric Pulmonology
  • Neonatal Surgery
  • Respiratory Physiology

Background:

  • Congenital diaphragmatic hernia (CDH) presents with severe lung defects and low compliance at birth.
  • Survivors of CDH repair typically exhibit fewer long-term respiratory abnormalities.
  • Understanding post-repair lung development is crucial for managing CDH patients.

Purpose of the Study:

  • To investigate the changes in lung growth and function in infants following surgical repair of CDH.
  • To assess the trajectory of pulmonary function recovery in the first two years of life.
  • To identify factors influencing lung function normalization after CDH repair.

Main Methods:

  • Retrospective analysis of pulmonary function tests in 56 infants post-CDH repair.
  • Evaluation of lung function parameters including functional residual capacity (FRC), respiratory system compliance (C(rs)), and resistance (R(rs)).
  • Comparison of lung function across four age groups: 0-3, 4-6, 7-12, and 13-24 months.

Main Results:

  • All lung function indices were abnormal in the first 6 months but showed significant normalization by 24 months (P < .0001).
  • Functional residual capacity (FRC) improved from -0.84 to 3.26, compliance (C(rs)) from -0.87 to 1.84, resistance (R(rs)) from 2.85 to -0.23, and maximal expiratory flow (V'(maxFRC)) from -1.63 to -0.09.
  • Lung function correlated significantly with increasing age, height, and particularly weight (P < .001).

Conclusions:

  • Lung growth and function gradually normalize between 6 and 24 months after CDH repair.
  • Early lung function deficits in CDH survivors improve substantially over the first two years.
  • Age, height, and weight are important indicators of lung function recovery in infants with CDH.
Abstract

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