Comparison Study of the Pulmonary Function and Serum Carboxyhemoglobin Level Between the Traffic Policmen and Clerk Policemen

Kim, Sung Min; Cheon, Gyu Rak; Kim, Young Wook; Kim, Joon Hyung; Lee, Ho Hak; Hong, Soon Chang; Lee, Seung Hee; Park, Sang Joon; Chung, Joon Oh; Kim, Yun Kwon; Kim, So Yon; Kim, Young Jung; Cho, Min Koo; Lee, Gwon Jun; Lee, Kyung In

Abstract

BACKGROUND: A large number of pollutants such as sulfur dioxide, nitric oxide, carbon monoxide, particulate matter, and ozone influence on the body. These pollutants put a burden on the lung and the sequelae resulting from the oxidative stress are thought to contribute to the development of fibrotic lung disease, emphysema, chronic bronchitis and lung cancer. Also, carbon monoxide generated from the incomplete combustion of carbon-containing compounds is an important component of air pollution caused by traffic exhaust fumes and has the toxic effect of tissue hypoxia and produce various systemic and neurologic complications. The objective of this study is to compare the difference of pulmonary function and serum carboxyhemoglobin(CO-Hb) level between the traffic policemen and clerk policemen.
METHODS
Three hundred and twenty-nine of traffic policemen, and one hundred and thirty clerk policemen were included between 2001 May and 2002 August. The policemen who took part in this study were asked to fill out a questionnaire which included questions on age, smoking, drinking, years of working, work-related symptoms and past medical history. The serum CO-Hb level was measured by using carboxyoximeter. Pulmonary function test was done by using automated spirometer. Additional tests, such as elecrocardiogram, urinalysis, chest radiography, blood chemistry, and CBC, were also done.
RESULTS
FEV1(%) was 97.1+/-0.85%, and 105.7+/-1.21%(p<0.05). FVC(%) was 94.6+/-0.67%, and 102.1+/-1.09%, respectively(p<0.05). Serum CO-Hb level was 2.4+/-0.06%, and 1.8+/-0.08%(p<0.05). After correction of confounding factors (age, smoking), significant variables were FVC(%), FEV1(%) and serum CO-Hb level(%)(p<0.05).
CONCLUSION
Long exposure to air pollution may influence the pulmonary function and serum CO-Hb level. But, further prospective cohort study will be needed to elucidate detailed influences of specific pollutants on pulmonary function and serum carboxyhemoglobin level.