Improvements with tiotropium in COPD patients with concomitant asthma.

Abstract

BACKGROUND Chronic obstructive pulmonary disease (COPD) and asthma have different diagnostic criteria and treatment paradigms. Both are common and can occur in the same patient. We sought to determine the spirometric effects of tiotropium in COPD patients with concomitant asthma. METHODS A 12-week randomized, double-blind, placebo-controlled, parallel… (More)

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