Non-interventional Study of Spirometry Use to Diagnose COPD (Chronic Obstructive Pulmonary Disease) and to Prescribe Treatment to COPD Patients in the Outpatient Institutions

The study is an observational multicenter descriptive study. No hypothesis is checked in the study. 3000 patients with COPD risk factors are planned to be enrolled into the study (current smokers and former smokers with smoking history of ≥10 pack/years at the age of \>40 years who have respiratory complaints) and 1450 patients previously diagnosed with COPD who contacted the physicians of outpatient institutions during the study (for 3 months) and are currently in remission. 100 patients with COPD risk factors and approximately 50 patients early diagnosed with COPD currently being stable are planned to be enrolled in each site. Physicians and pulmonologists of the outpatient institutions of the Russian Federation will take part in the study in about 30 sites in 18 cities (a total of 31% of RF population live in the cities). The observational descriptive study will be conducted within the routine practice of outpatient institutions. Examining and treatment of patients will be performed according to the rules of the routine practice. Patients will be enrolled into the study as they visit the outpatient institutions for the medical care. The study does not imply any special invitation of COPD patients to the sites for them to be enrolled into the study. Therefore the conditions are made for the study population to reflect the typical visitors of the primary care medical institutions in different RF (Russian Federation) regions. Patients are enrolled into the study regardless the reason for appointment with a doctor. A reason for the appointment can be respiratory complaints as well as any other diseases or certificates and conclusions. To be enrolled into the study the subjects must sign the written Informed Consent Form (ICF) to participate in the study and to use personal data confidentially. To investigate the role of spirometry in diagnostics and management of the COPD patients, two groups of patients are supposed to be included into the study.