Rejoining the server...

Rejoin failed... trying again in seconds.

Failed to rejoin.
Please retry or reload the page.

The session has been paused by the server.

Failed to resume the session.
Please retry or reload the page.





  • Aid in the diagnosis and staging of COPD
  • Aid in the diagnosis of asthma
  • Aid in determining appropriate treatment for patients with shortness of breath
  • Aid in tracking lung function over time (either improvement or deterioration) in patients with certain chronic diseases (e.g. sarcoidosis, idiopathic pulmonary fibrosis, neuromuscular, etc.)
  • Screening patients who are asymptomatic but at risk for developing lung disease (e.g. smokers)




Authored by William A. French. Medically reviewed by Dr. Barbara Erickson, PhD, RN, CCRN.


ns: 1 | sp1: C | c: