Assessment of Air Pollution Effects on the Respiratory System Based on Pulmonary Function Tests Performed During Spirometry Days.

The Polish Spirometry Day is an initiative aimed at increasing awareness of the causes, symptoms, course, and effects that accompany respiratory diseases, especially asthma and chronic obstructive pulmonary disease (COPD). In 2013, the second edition of the Spirometry Day was held. It gathered 180 medical centers and other institution. The final analysis encompassed a total of 1187 persons from 26 different locations, including rural areas, and smaller and larger city agglomerations. Of this total, 755 persons (63.6 %) completed their spirometry tests for the first time in life. Each person fulfilled a questionnaire regarding the personal information, respiratory diseases, symptoms, lifestyle, and a place of residence. In the total group, 234 (19.7 %) cases of bronchial obstruction were diagnosed. A hundred and thirty four persons with obstruction, among those tested for the first time in life (17.8 %), were unaware of their disease. The lowest values of FEV1 and FEF(1)/FVC, corresponding to the highest percentage of persons with obstruction (27.9 %) were observed in small and medium cities (100,000-500,000 inhabitants). There were differences in the prevalence of obstruction depending on the distance of the place of residence from a busy traffic road. A significant decrease of both spirometric variables was observed among people living in cities above 100,000 inhabitants within a distance lower than 50 m from roads. In general, better spirometry results were observed among inhabitants living more than 150 m from main roads.