Author:
Yammine Sophie,Schmidt Anne,Sutter Oliver,Fouzas Sotirios,Singer Florian,Frey Urs,Latzin Philipp
Abstract
Prematurity is the most common disruptor of lung development. The aim of our study was to examine the function of the more vulnerable peripheral airways in former preterm children by multiple-breath washout (MBW) measurements.86 school-aged children, born between 24 and 35 weeks of gestation and 49 term-born children performed nitrogen MBW. Lung clearance index (LCI), and slope III-derived Scond and Sacin were assessed as markers for global, convection-dependent and diffusion–convection-dependent ventilation inhomogeneity, respectively.We analysed the data of 77 former preterm (mean (range) age 9.5 (7.2–12.8) years) and 46 term-born children (mean age 9.9 (6.0–15.9) years). LCI and Sacin did not differ between preterm and term-born children. Scond was significantly elevated in preterm compared to term-born participants (mean difference z-score 1.74, 95% CI 1.17–2.30; p<0.001), with 54% of former preterm children showing elevated Scond. In multivariable regression analysis Scond was significantly related only to gestational age (R2=0.37).Normal Sacin provides evidence for a functionally normal alveolar compartment, while elevated Scond indicates impaired function of more proximal conducting airways. Together, our findings support the concept of continued alveolarisation, albeit with “dysanaptic” lung growth in former preterm children.
Funder
the Swiss National Foundation
Fondation Botnar
Long-Term Fellowship of the German-Swiss-Austrian society for pediatric pulmonology (GPP) for Anne Schmidt
the Gottfried und Julia Bangerter-Rhyner-Stiftung
Linde AG
Publisher
European Respiratory Society (ERS)
Subject
Pulmonary and Respiratory Medicine
Cited by
47 articles.
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