Post-exercise accumulation of interstitial lung water is greater in hypobaric than normobaric hypoxia in adults born prematurely.

Details

Serval ID
serval:BIB_A87A3A865F84
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Post-exercise accumulation of interstitial lung water is greater in hypobaric than normobaric hypoxia in adults born prematurely.
Journal
Respiratory physiology & neurobiology
Author(s)
Debevec T., Poussel M., Osredkar D., Willis S.J., Sartori C., Millet G.P.
ISSN
1878-1519 (Electronic)
ISSN-L
1569-9048
Publication state
Published
Issued date
03/2022
Peer-reviewed
Oui
Volume
297
Pages
103828
Language
english
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Abstract
We aimed to gauge the interstitial lung water accumulation following moderate-intensity exercise under normobaric and hypobaric hypoxic conditions in a group of preterm born but otherwise healthy young adults. Sixteen pre-term-born individuals (age = 21±2yrs.; gestational age = 29±3wk.; birth weight = 1160±273 g) underwent two 8 -h hypoxic/altitude exposures in a cross-over manner: 1) Normobaric hypoxic exposure (NH; F <sub>I</sub> O <sub>2</sub> = 0.142±0.001; P <sub>I</sub> O <sub>2</sub> = 90.6±0.9 mmHg) 2) Hypobaric hypoxic exposure (HH; terrestrial high-altitude 3840 m; P <sub>I</sub> O <sub>2</sub> = 90.2±0.5 mmHg). Interstitial lung water was assessed via quantification of B-Lines (using lung ultrasound) before (normoxia) and after 4-h and 8-h of respective exposures. At each time point, B-Lines were quantified before (Pre) and immediately after (Post) a 6-min moderate-intensity exercise. The baseline B-lines count were comparable between both conditions (P = 0.191). A higher B-lines count was noted at Pre-H4 in HH versus NH (P = 0.0420). At Post-H8 B-lines score was significantly higher in HH (4.6 ± 1.6) than in NH (3.1 ± 1.4; P = 0.0073). Furthermore, at this time point, a significantly higher number of individuals with B-line scores ≥5 was observed in HH (n = 7) than in NH (n = 3; P = 0.0420). These findings suggest that short moderate-intensity exercise provokes a significant increase in the interstitial lung water accumulation after 8 h of exposure to terrestrial but not simulated altitude (≈3840 m) in prematurely born adults. Further work is needed to elucidate the exact mechanisms of (moderate-intensity) exercise-induced interstitial lung water accumulation in this population and directly compare the obtained data to full-term born adults.
Keywords
Adult, Altitude, Body Water/diagnostic imaging, Exercise/physiology, Female, Humans, Hypoxia/physiopathology, Infant, Newborn, Infant, Premature/physiology, Lung/diagnostic imaging, Male, Pulmonary Edema/physiopathology, Ultrasonography, Young Adult, Exercise, High altitude pulmonary oedema, Lung comets, Premature birth
Pubmed
Web of science
Create date
20/12/2021 14:27
Last modification date
01/04/2022 6:34
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