Functional evidence for continued alveolarisation in former preterms at school age?

Yammine, Sophie; Schmidt, Anne; Sutter, Oliver; Fouzas, Sotirios; Singer, Florian; Frey, Urs; Latzin, Philipp (2016). Functional evidence for continued alveolarisation in former preterms at school age? European respiratory journal, 47(1), pp. 147-155. European Respiratory Society 10.1183/13993003.00478-2015

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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 (R(2)=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.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Department of Gynaecology, Paediatrics and Endocrinology (DFKE) > Clinic of Paediatric Medicine
04 Faculty of Medicine > Pre-clinic Human Medicine > BioMedical Research (DBMR) > Unit Childrens Hospital > Forschungsgruppe Pneumologie (Pädiatrie)

UniBE Contributor:

Yammine, Sophie; Singer, Florian and Latzin, Philipp

Subjects:

600 Technology > 610 Medicine & health

ISSN:

0903-1936

Publisher:

European Respiratory Society

Language:

English

Submitter:

André Schaller

Date Deposited:

11 May 2016 12:29

Last Modified:

17 Feb 2017 13:19

Publisher DOI:

10.1183/13993003.00478-2015

PubMed ID:

26493788

BORIS DOI:

10.7892/boris.80038

URI:

https://boris.unibe.ch/id/eprint/80038

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