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  • Title: Long-acting bronchodilators and arterial stiffness in patients with COPD: a comparison of fluticasone furoate/vilanterol with tiotropium.
    Author: Pepin JL, Cockcroft JR, Midwinter D, Sharma S, Rubin DB, Andreas S.
    Journal: Chest; 2014 Dec; 146(6):1521-1530. PubMed ID: 25058845.
    Abstract:
    BACKGROUND: Increased arterial stiffness as measured by aortic pulse wave velocity (aPWV) predicts cardiovascular events and mortality and is elevated in patients with COPD. Prior investigation suggests that a long-acting β-agonist (LABA)/inhaled corticosteroid (ICS) lowers aPWV in patients with baseline aPWV ≥ 11 m/s. This study compared the effect of the ICS/LABA fluticasone furoate/vilanterol (FF/VI), 100/25 μg, delivered via the ELLIPTA dry powder inhaler, with tiotropium bromide (TIO), 18 μg, on aPWV. METHODS: This multicenter, randomized, blinded, double-dummy, parallel-group, 12-week study compared FF/VI and TIO, both administered once daily. The primary end point was aPWV change from baseline at 12 weeks. Safety end points included adverse events (AEs), vital signs, and clinical laboratory tests. RESULTS: Two hundred fifty-seven patients with COPD and aPWV ≥ 11 m/s were randomized; 87% had prior cardiovascular events and/or risk. The mean difference in aPWV between FF/VI and TIO at week 12 was not significant (P = .484). Because the study did not contain a placebo arm, a post hoc analysis was performed to show that both treatments lowered aPWV by an approximate difference of 1 m/s compared with baseline. The proportion of patients reporting AEs was similar with FF/VI (24%) and TIO (18%). There were no changes in clinical concern for vital signs or clinical laboratory tests. CONCLUSIONS: No differences on aPWV were observed between FF/VI and TIO. However, further studies with a placebo arm are required to establish definitively whether long-acting bronchodilators lower aPWV. Both treatments demonstrated an acceptable tolerability profile. TRIAL REGISTRY: ClinicalTrials.gov; No.: NCT01395888; URL: www.clinicaltrials.gov.
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