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Fig. 1 | BMC Pulmonary Medicine

Fig. 1

From: The prevalence of bronchodilator responsiveness of the small airway (using mid-maximal expiratory flow) in COPD - a retrospective study

Fig. 1

Flowchart of the study. Legend: This figure demonstrates the selection process for patients according to eligibility criteria. Group 1, those with BDR in FEV1 and MMEF; Group 2, those with BDR in MMEF alone; Group 3, those with no BDR in either FEV1 or MMEF. Abbreviations: COPD, chronic obstructive pulmonary disease; MMEF, maximal mid-expiratory flow; FEV1, forced expiratory volume in 1 s; BDR, bronchodilator response

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BMC Pulmonary Medicine

ISSN: 1471-2466

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