Study of Patient With Frequent COPD Exacerbations

The study consists of a retrospective phase covering 52 weeks and a prospective phase of 24 weeks, involving 2000 patients across approximately 35 cites. Therefore, the aim of the study is to evaluate the clinical and demographic patients' characteristics based on retrospective part and COPD treatment patterns based on prospective part of patients with frequent exacerbations of COPD on dual therapy in the Russian Federation. The study results will be interpreted in the context of an open label, single arm study design. Due to the limited data available on the COPD population in Russia, the characterization of clinical and demographic characteristic of patients based on the retrospective component of the study will enhance the understanding of this patient group and the prospective aspect, which analyses therapeutic approaches, will help to assess physicians' adherence to current recommendations regarding therapy selection for COPD patients on dual therapy with frequent exacerbations.