Volume 7, Issue 1 (spring 2010)                   ioh 2010, 7(1): 8-0 | Back to browse issues page

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Salehpour S, Azin S, Masjedi M, Kazempour M. Carbon monoxide in exhaled air of students in Tehran. ioh. 2010; 7 (1) :8-0
URL: http://ioh.iums.ac.ir/article-1-283-en.html
Masih Daneshvari Dept. for Cancer and Pulmonary Diseases, Shahid , ssalehpour@nritld.ac.ir
Abstract:   (7192 Views)

Background and aims

Carbon monoxide poisoning is a major cause of mortality due to gas

inhalation. It is more prevalent in winter, because of poor indoor ventilation. The purpose of our

study was to evaluate exhaled carbon monoxide of students and to estimate their exposure to this gas.


This cross-sectional study was performed in winter 2008. The exhaled carbon

monoxide level of 184 students was assessed by breath analyzer. Questionnaire data were

collected to assess smoking habit, types of domestic exposures and symptoms of carbon monoxide  intoxication.


Students consists of 79 boys and 105 girls. Number of cases in carbon monoxide levels

of 0-6 ppm, 7-10ppm, 11-20ppm and above 20ppm were consecutively 150(81.52%),

23(12.50%), 10(5.43%) and 1(0.54%). The difference of symptoms in different groups was not  significant.


Due to our results, 34(18.47%) cases of healthy nonsmoker students had abnormal

exhaled carbon monoxide level of more than 1-3 ppm which could be attributed to environmental

exposures. 11(5.97%) cases had carbon monoxide exhaled level of more than 11ppm which

exceeds the permissible exposure limits. More attention should be paid to the sources of carbon

monoxide exposure in children, in order to minimize morbidity and mortality related to carbon

monoxide intoxication.

Full-Text [PDF 181 kb]   (2737 Downloads)    
Type of Study: Research | Subject: Safety in the aviation industry
Received: 2010/07/24

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