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Title: A randomized cross-over trial on the direct effects of oxygen supplementation therapy using different devices on cycle endurance in hypoxemic patients with Interstitial Lung Disease
Authors: Edvardsen, Anne
Jarosch, Inga
Grongstad, Anita
Wiegand, Laura
Gloeckl, Rainer
Kenn, Klaus
SPRUIT, Martijn A. 
Issue Date: 2018
Source: PLOS ONE, 13(12) (Art N° e0209069)
Abstract: Background In patients with interstitial lung disease (ILD) a cardinal feature is exercise intolerance, often associated with significant dyspnea and severe hypoxemia. Supplemental oxygen therapy may be offered during exercise. The Oxymizer is a nasal cannula with an incorporated reservoir with the potential to deliver higher oxygen doses to the patient. Objective The primary aim was to investigate the effect of supplemental oxygen delivered via Oxymizer compared to a conventional nasal cannula (CNC) in patients with ILD during constant work rate tests (CWRT). Secondary aim was to evaluate effects on oxygen saturation (SpO(2)), dyspnea and heart rate at isotime. Methods In this randomized crossover study 24 ILD patients established on long-term oxygen treatment were included. Patients performed four cycling CWRT at 70% of their peak work rate; twice with the Oxymizer and twice with the CNC. Results Twenty-one patients finished all CWRTs (age 60 +/- 10.9 years, VC 55.4 +/- 23.0% predicted). Cycle endurance time was significantly higher while using the Oxymizer compared to CNC (718 +/- 485 vs. 680 +/- 579 seconds, p = 0.02), and SpO(2) at isotime was significantly higher while using the Oxymizer (85.5 +/- 6.7 vs. 82.8 +/- 7.2, p = 0.01). Fifteen of the 21 (71%) patients cycled longer with the Oxymizer. There were no significant differences for dyspnea and heart rate. Conclusions Supplemental oxygen provided by the Oxymizer significantly, but modestly, improved cycle endurance time and SpO(2) at isotime in ILD patients compared to CNC.
Notes: [Edvardsen, Anne; Grongstad, Anita] LHL Hosp Gardermoen, Dept Resp Physiol, Jessheim, Norway. [Jarosch, Inga; Gloeckl, Rainer; Kenn, Klaus] Schoen Klin Berchtesgadener Land, Dept Resp Med & Pulm Rehabil, Schoenau, Germany. [Wiegand, Laura] Philipps Univ Marburg, Dept Internal Med, Marburg, Germany. [Gloeckl, Rainer] Tech Univ Munich, Dept Prevent Rehabil & Sports Med, Munich, Germany. [Kenn, Klaus] Philipps Univ Marburg, Ctr Lung Res DZL, Dept Pulm Rehabil, Marburg, Germany. [Spruit, Martijn A.] Ctr Expertise Chron Organ Failure, CIRO, Dept Res & Educ, Horn, Netherlands. [Spruit, Martijn A.] Hasselt Univ, Fac Med & Life Sci, BIOMED Biomed Res Inst, REVAL Rehabil Res Ctr, Diepenbeek, Belgium. [Spruit, Martijn A.] Maastricht Univ, Med Ctr, NUTRIM Sch Nutr & Translat Res Metab, Dept Resp Med, Maastricht, Netherlands.
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ISSN: 1932-6203
e-ISSN: 1932-6203
DOI: 10.1371/journal.pone.0209069
ISI #: 000454621900013
Rights: 2018 Edvardsen et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Category: A1
Type: Journal Contribution
Validations: ecoom 2020
Appears in Collections:Research publications

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