Practicability of nitrogen multiple-breath washout measurements in a pediatric cystic fibrosis outpatient setting

Singer, Florian; Kieninger, Elisabeth; Abbas, Chiara; Yammine, Sophie; Fuchs, Oliver; Proietti, Elena; Regamey, Nicolas; Casaulta, Carmen; Frey, Urs; Latzin, Philipp (2012). Practicability of nitrogen multiple-breath washout measurements in a pediatric cystic fibrosis outpatient setting. Pediatric pulmonology, 48(8), pp. 739-746. Hoboken, N.J.: Wiley-Blackwell 10.1002/ppul.22651

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BACKGROUND: Although lung clearance index (LCI) is a sensitive indicator of mild cystic fibrosis (CF) lung disease, it is rarely measured due to lengthy protocols and the commercial unavailability of multiple-breath washout (MBW) setups and tracer gases. We used a newly validated, commercially available nitrogen (N(2) ) MBW setup to assess success rate, duration, and variability of LCI within a 20 min timeframe, during clinical routine. We also evaluated the relationship between LCI and other clinical markers of CF lung disease. METHODS: One hundred thirty six children (83 with CF) between 4 and 16 years were studied in a pediatric CF outpatient setting. One hundred eighteen out of 136 children were naïve to MBW. Within 20 min, each child was trained, N(2) MBW was performed, and LCI was analyzed. We assessed intra- and between-test reproducibility in a subgroup of children. RESULTS: At least one LCI was feasible in 123 (90%) children, with a mean (range) of 3.3 (1.2-6.4) min per test. Two or more measurements were feasible in 56 (41%) children. Comparing LCI in CF versus controls, LCI mean (SD) was 12.0 (3.9) versus 6.1 (0.9), and the intra- and inter-test coefficient of repeatability was 1.00 versus 0.81 and 0.96 versus 0.62, respectively. LCI was correlated with spirometry, blood gases, and Pseudomonas aeruginosa infection. CONCLUSIONS: Using available N(2) MBW equipment, LCI measurements are practical and fast in children. LCI is correlated with markers of CF lung disease. Longer timeframes would be required for triplicate N(2) MBW tests in inexperienced children. Pediatr Pulmonol. © 2012 Wiley Periodicals, Inc.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Department of Gynaecology, Paediatrics and Endocrinology (DFKE) > Clinic of Paediatric Medicine

Graduate School:

Graduate School for Cellular and Biomedical Sciences (GCB)

UniBE Contributor:

Singer, Florian; Kieninger, Elisabeth; Abbas, Chiara Carolina; Yammine, Sophie; Fuchs, Oliver; Regamey, Nicolas; Casaulta Aebischer, Carmen and Latzin, Philipp

ISSN:

8755-6863

Publisher:

Wiley-Blackwell

Language:

English

Submitter:

Factscience Import

Date Deposited:

04 Oct 2013 14:40

Last Modified:

01 Nov 2016 13:26

Publisher DOI:

10.1002/ppul.22651

PubMed ID:

22888105

Web of Science ID:

000321977200001

URI:

https://boris.unibe.ch/id/eprint/16096 (FactScience: 223671)

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