RT Journal Article SR Electronic A1 Bankhead, Charles T1 Effects of COPD Therapies on Lung Function Parameters JF MD Conference Express YR 2010 FD SAGE Publications VO 10 IS 3 SP 9 OP 10 DO 10.1177/155989771003008 UL http://mdc.sagepub.com/content/10/3/9.2.abstract AB A year of treatment with tiotropium significantly improved blood gas parameters in hypoxemic patients with severe chronic obstructive pulmonary disease, as compared with inhaled corticosteroids plus a long-acting beta-agonist.