Mikołaj Maga1, Maciej K Janik2, Agnieszka Wachsmann3, Olga Chrząstek-Janik2, Mateusz Koziej1, Mateusz Bajkowski2, Paweł Maga4, Katarzyna Tyrak1, Krzysztof Wójcik5, Iwona Gregorczyk-Maga1, Rafał Niżankowski4. 1. Jagiellonian University Medical College, 8 Skawinska Street, Krakow, Poland. 2. Medical University of Warsaw, 2a Trojdena Street, Warsaw, Poland. 3. Jagiellonian University Medical College, 8 Skawinska Street, Krakow, Poland. Electronic address: agnieszka.wachsmann@gmail.com. 4. Angiology Department, Jagiellonian University Medical College, 8 Skawinska Street, Krakow, Poland. 5. Immunology and Allergology Department, Jagiellonian University Medical College, 8 Skawinska Street, Krakow, Poland.
Abstract
BACKGROUND: The poor air quality and cigarette smoking are the most important reasons for increased carbon monoxide (CO) level in exhaled air. However, the influence of high air pollution concentration in big cities on the exhaled CO level has not been well studied yet. OBJECTIVES: To evaluate the impact of smoking habit and air pollution in the place of living on the level of CO in exhaled air. METHODS: Citizens from two large cities and one small town in Poland were asked to complete a survey disclosing their place of residence, education level, work status and smoking habits. Subsequently, the CO level in their exhaled air was measured. Air quality data, obtained from the Regional Inspectorates of Environmental Protection, revealed the differences in atmospheric CO concentration between locations. RESULTS: 1226 subjects were divided into 4 groups based on their declared smoking status and place of living. The average CO level in exhaled air was significantly higher in smokers than in non-smokers (p<0.0001) as well as in non-smokers from big cities than non-smokers from small ones (p<0.0001). Created model showed that non-smokers from big cities have odds ratio of 125.3 for exceeding CO cutoff level of 4ppm compared to non-smokers from small towns. CONCLUSIONS: The average CO level in exhaled air is significantly higher in smokers than non-smokers. Among non-smokers, the average exhaled CO level is significantly higher in big city than small town citizens. These results suggest that permanent exposure to an increased concentration of air pollution and cigarette smoking affect the level of exhaled CO. Copyright Â
BACKGROUND: The poor air quality and cigarette smoking are the most important reasons for increased carbon monoxide (CO) level in exhaled air. However, the influence of high air pollution concentration in big cities on the exhaled CO level has not been well studied yet. OBJECTIVES: To evaluate the impact of smoking habit and air pollution in the place of living on the level of CO in exhaled air. METHODS: Citizens from two large cities and one small town in Poland were asked to complete a survey disclosing their place of residence, education level, work status and smoking habits. Subsequently, the CO level in their exhaled air was measured. Air quality data, obtained from the Regional Inspectorates of Environmental Protection, revealed the differences in atmospheric CO concentration between locations. RESULTS: 1226 subjects were divided into 4 groups based on their declared smoking status and place of living. The average CO level in exhaled air was significantly higher in smokers than in non-smokers (p<0.0001) as well as in non-smokers from big cities than non-smokers from small ones (p<0.0001). Created model showed that non-smokers from big cities have odds ratio of 125.3 for exceeding CO cutoff level of 4ppm compared to non-smokers from small towns. CONCLUSIONS: The average CO level in exhaled air is significantly higher in smokers than non-smokers. Among non-smokers, the average exhaled CO level is significantly higher in big city than small town citizens. These results suggest that permanent exposure to an increased concentration of air pollution and cigarette smoking affect the level of exhaled CO. Copyright Â
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