International journal of chronic obstructive pulmonary disease
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Int J Chron Obstruct Pulmon Dis · Jan 2008
Randomized Controlled Trial Multicenter StudyTiotropium and exercise training in COPD patients: effects on dyspnea and exercise tolerance.
Exercise training improves exercise tolerance in chronic obstructive pulmonary disease (COPD). Tiotropium 18 microg once daily induces sustained bronchodilation throughout the day and reduces hyperinflation, one of the pathophysiological factors contributing to exertional dyspnea in COPD patients. ⋯ Although significant improvements were observed with perceived dyspnea, compared to placebo, the addition of tiotropium to pulmonary rehabilitation did not improve the 6MWT.
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Int J Chron Obstruct Pulmon Dis · Jan 2008
Randomized Controlled Trial Multicenter Study Comparative StudyEffect of tiotropium on health-related quality of life as a primary efficacy endpoint in COPD.
Clinical manifestations of chronic obstructive pulmonary disease (COPD), including airflow limitation, dyspnea, and activity limitation, ultimately lead to impaired health-related quality of life (HRQoL). This 9-month, randomized, double-blind, multicenter study compared the effect of once-daily tiotropium 18 microg and placebo on HRQoL, spirometric parameters, and exacerbations in 554 patients with moderate-to-severe COPD. HRQoL was assessed using the St. ⋯ Significantly more tiotropium-treated patients achieved a reduction of at least 4 units in the SGRQ score vs placebo at study end (59.1% vs 48.2%, respectively; p = 0.029). Tiotropium significantly improved spirometric parameters (forced expiratory volume in 1 second [FEV1]: 0.11 +/- 0.02 L vs 0.01 +/- 0.02 L; between-group difference: 0.10 +/- 0.03 L, p = 0.0001) and reduced exacerbations vs placebo. Maintenance treatment with tiotropium provided significant and clinically relevant improvements in HRQoL, as measured by the SGRQ.