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KMID : 0383819820290040205
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Tuberculosis and Respiratory Diseases
1982 Volume.29 No. 4 p.205 ~ p.212
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Immediate Effect of Cigarette Smoking on the Maximal Expiratory Flow-Volume Curve and Single Breath Nitrogen Washout Test
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Lee Young-Hyun
Lee Myung-Hye
Choi Byoung-Whyui
Park Choon-Sik
Shim Young-Soo
Kim Keun-Youl
Han Yong-Chul
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Abstract
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Pulmonary function test was performed on 30 healthy male subjects to study the immediate effect of cigarette smoking on the small airway obstruction. The subjects were all in the second and third decodes and had no respiratory problems. Maximal expiratory flow-volume curve and single breath nitrogen washouts test were performed before and after a cigarette smoking. Statistical analysis was done by ’student paired t tests’.
The results were summarized as follows;
1) After smoking, there were significant changes in the MEF50, MEF25∼75, closing capacity/total lung capacity, which are all effort independent part of lung fung test(p<0.05).
2) There were no significant changes in the FVC, closing volume/vital capacity (p>0.05).
3) FEV1.0 and FEV1.0/FVC also showed significant change (p<0.05). But whether it was caused by true smoking effect or the subject’s fatigue resulting from repeated (3∼6 times) forced expiratory efforts, still remains in question.
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