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Sequential comparison of tiotropium to high-dose ipratropium in patients with chronic obstructive pulmonary disease in a practice setting

Authors Umair Gauhar, Mark Dransfield, J Allen D Cooper

Published 14 October 2009 Volume 2009:4 Pages 391—395

DOI https://doi.org/10.2147/COPD.S7566

Review by Single-blind

Peer reviewer comments 3

Umair Gauhar, Mark Dransfield, J Allen D Cooper

Pulmonary Section, Birmingham Veterans Affairs Medical Center and Division of Allergy, Pulmonary and Critical Medicine University of Alabama at Birmingham, AL, USA

Objective: To determine the effect of changing anticholinergic therapy in patients with COPD from ipratropium to tiotropium on pulmonary function.

Methods: We examined records of patients prescribed high-dose ipratropium, who were subsequently converted to tiotropium. Spirometric values were obtained within 2 days of the change in medication and after 56 to 224 days of the switch to tiotropium.

Results: 15 subjects were documented to have filled a prescription for ipratropium-containing medications the month prior to the change. Medication compliance over the 6 months prior to the switch in these patients was 72% ± 31% (mean ± SD) for ipratropium compared to 87% ± 14% for tiotropium over the 6-month period after the switch (P = 0.1). FEV1 improved from 1.12 ± 0.39 L at baseline to 1.37 ± 0.49 L after the change to tiotropium (P = 0.01). FVC also improved from 2.45 ± 0.73 L at baseline to 2.72 ± 0.69 L after the change (P = 0.04). Maximal voluntary ventilation was also increased from 39.67 ± 10.7 L/min to 45.13 ± 15.8 L/min (P = 0.045).

Conclusions: We conclude that replacing high-dose ipratropium with tiotropium therapy significantly improves pulmonary function in a clinical setting.

Keywords: ipratropium, tiotropium, COPD, pulmonary function, exacerbation rate

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