P296 Effect of tiotropium/olodaterol therapy on copd exacerbations in the tonado® studies

Rationale The lung-function efficacy, symptomatic benefits and safety of combined tiotropium (T), a long-acting muscarinic antagonist, and olodaterol (O), a long-acting β 2 -agonist, for the treatment of COPD, was established in the year-long TONADO ® studies (NCT01431274; NCT01431287). It is unknown if these benefits of T/O translate into a reduction in COPD exacerbation rate. Methods Two replicate, randomised, double-blind, parallel-group trials assessed T/O 2.5/5 μg and T/O 5/5 μg compared to the monocomponents T 5 μg, T 2.5 μg and O 5 µg (all delivered via Respimat ® inhaler) in patients with moderate to very severe COPD. Primary end points included lung function (forced expiratory volu…