[Prevention of chronic bronchitis in relation to the stage of development under current conditions of the organization of medical care].

Mass screening was used for a study of chronic bronchitis (CB) morbidity among 5107 construction workers and employees in the city of Barnaul. The rate of persons at risk of developing CB was 10.1%, with prebronchitis 7.9%, with CB 11.1%. CB stage-related individual therapeutic and prophylactic activities in outpatient clinics resulted in a decrease in morbidity rates of diseases of the respiratory organs with temporary loss of working capacity per 100 workers: from 98.3 (in 1980) to 17.5 cases (in 1984), i.e. from 1162.9 to 107.3 days, respectively, when a preventorium is engaged; without preventorium cases reduced from 93.5 to 40.0, i.e. from 1091.6 to 394.1 days, respectively. The identification during CB formation of the stage of risk of CB development, the stage of prebronchitis and CB as a nosological entity promoted the improvement of organization of therapeutic and prophylactic care.