作者
Susumu Sato, Koichi Nishimura, Hiroshi Koyama, Mitsuhiro Tsukino, Toru Oga, Takashi Hajiro, Michiaki Mishima
发表日期
2003/11/1
期刊
Chest
卷号
124
期号
5
页码范围
1749-1754
出版商
Elsevier
简介
Study objectives
To assess the optimal cutoff level of breath CO concentration to distinguish actual smokers from nonsmokers among patients with asthma and COPD.
Setting
Kyoto University Hospital outpatient clinic.
Subjects and methods
Three hundred thirty-one consecutive outpatients (161 with asthma and 170 with COPD) were examined cross-sectionally by self-reported smoking status, breath CO monitoring, and serum cotinine concentration. Actual smoking status was verified by serum cotinine concentration.
Results
Mean serum cotinine concentrations of never smokers, former smokers, and current smokers with asthma were 6.0 ± 5.2 ng/mL, 12.1 ± 25.0 ng/mL, and 198.3 ± 181.7 ng/mL, respectively (± SD). Mean serum cotinine concentrations of former smokers and current smokers with COPD were 23.2 ± 69.2 ng/mL and 191.1 ± 109.8 ng/mL, respectively. Mean breath CO levels of never smokers, former …
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S Sato, K Nishimura, H Koyama, M Tsukino, T Oga… - Chest, 2003
