Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2018 Nov 1;13:3625–3634. doi: 10.2147/COPD.S169951

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© 2018 Raveling et al. This work is published and licensed by Dove Medical Press Limited

The full terms of this license are available at https://www.dovepress.com/terms.php and incorporate the Creative Commons Attribution – Non Commercial (unported, v3.0) License (http://creativecommons.org/licenses/by-nc/3.0/). By accessing the work you hereby accept the Terms. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed.

PMC Copyright notice

Flowchart of the study.

Note: ^aDiscontinued NIV due to lung transplantation, lung volume reduction therapy, or recovery of respiratory failure.

Abbreviations: NIV, noninvasive ventilation; ARF, acute respiratory failure.