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.
Flow diagram of patients with chronic obstructive pulmonary disease managed by home-based PR.
Abbreviations: CPAP, continuous positive airway pressure; LTOT, long-term oxygen therapy; NE, no equipment; NIV, noninvasive ventilation; PR, pulmonary rehabilitation.
