Any patient who smokes one or more cigarettes per day will be considered an active smoker. The criteria for the diagnosis of COPD is a post-bronchodilator FEV1/FVC ratio of < 70% (absolute value).

Background Change in 6-min walk distance (6MWD) over time serves as a measure of change in functional exercise performance. We analysed a large cohort of current or former tobacco smokers over a ...

Equations that don't use racially and ethnically adjusted spirometry results to help determine eligibility for chronic obstructive pulmonary disease (COPD) clinical trials may lead to higher ...

Please provide your email address to receive an email when new articles are posted on . Preserved ratio impaired spirometry is a common lung function trait associated with breathlessness, ...

Spirometry is a standard test that doctors use to determine how well your lungs are functioning. The test works by measuring airflow into and out of your lungs. To take a spirometry test, you sit and ...