FEV1 helps measure the progression of lung conditions such as chronic obstructive pulmonary disease (COPD) or asthma. FEV stands for forced expiratory volume, which is the air you exhale in one second ...
Post hoc analyses of some Phase 3 placebo-controlled studies showed that adding Spiriva Respimat improved peak FEV1(0-3h) and trough FEV1 across a range of baseline IgE levels and eosinophil counts.
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