To the top

Page Manager: Webmaster
Last update: 9/11/2012 3:13 PM

Tell a friend about this page
Print version

A new way of monitoring m… - University of Gothenburg, Sweden Till startsida
Sitemap
To content Read more about how we use cookies on gu.se

A new way of monitoring mechanical ventilation by measurement of particle flow from the airways using Pexa method in vivo and during ex vivo lung perfusion in DCD lung transplantation

Journal article
Authors E. Broberg
M. Wlosinska
L. Algotsson
Anna-Carin Olin
D. Wagner
L. Pierre
S. Lindstedt
Published in Intensive Care Medicine Experimental
Volume 6
ISSN 2197-425X
Publication year 2018
Published at Institute of Medicine, School of Public Health and Community Medicine
Language en
Links dx.doi.org/10.1186/s40635-018-0188-...
Keywords exhaled particles, cardiac death, donor, biomarkers, donation, breath, General & Internal Medicine
Subject categories Community medicine

Abstract

Background: Different mechanical ventilation settings are known to affect lung preservation for lung transplantation. Measurement of particle flow in exhaled air may allow online assessment of the impact of ventilation before changes in the tissue can be observed. We hypothesized that by analyzing the particle flow, we could understand the impact of different ventilation parameters. Methods: Particle flow was monitored in vivo, post mortem, and in ex vivo lung perfusion (EVLP) in six porcines with the Pexa (particles in exhaled air) instrument. Volume-controlled ventilation (VCV) and pressure-controlled ventilation (PCV) were used to compare small versus large tidal volumes. The surfactant lipids dipalmitoylphosphatidylcholine (DPPC) and phosphatidylcholine (PC) were quantified by mass spectrometry. Results: In vivo the particle mass in VCV1 was significantly lower than in VCV2 (p= 0.0186), and the particle mass was significantly higher in PCV1 than in VCV1 (p= 0.0322). In EVLP, the particle mass in VCV1 was significantly higher than in PCV1 (p= 0.0371), and the particle mass was significantly higher in PCV2 than in PCV1 (p= 0.0127). DPPC was significantly higher in EVLP than in vivo. Conclusions: Here, we introduce a new method for measuring particle flow during mechanical ventilation and confirm that these particles can be collected and analyzed. VCV resulted in a lower particle flow in vivo but not in EVLP. In all settings, large tidal volumes resulted in increased particle flow. We found that DPPC was significantly increased comparing in vivo with EVLP. This technology may be useful for developing strategies to preserve the lung and has a high potential to detect biomarkers.

Page Manager: Webmaster|Last update: 9/11/2012
Share:

The University of Gothenburg uses cookies to provide you with the best possible user experience. By continuing on this website, you approve of our use of cookies.  What are cookies?