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).

Home spirometry shows potential for early detection of pulmonary function decline in patients with systemic sclerosis–associated interstitial lung disease (SSc-ILD). It shows good cross-sectional ...

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, ...