Published by Misasa Medical Center, Okayama University Medical School
Published by Misasa Medical Center, Okayama University Medical School

<Formerly known as>
岡大三朝分院研究報告 (63号-72号) 環境病態研報告 (57号-62号)
岡山大学温泉研究所報告 (5号-56号) 放射能泉研究所報告 (1号-4号)

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Difference in low attenuation area (LAA) of the lungs on high resolution computed tomography (HRCT) between asthma and pulmonary emphysema in relation to cigarette smoking

光廷 文裕 岡山大学医学部・歯学部附属病院三朝医療センター 内科
保崎 泰弘 岡山大学医学部・歯学部附属病院三朝医療センター 内科
芦田 耕三 岡山大学医学部・学部附属病院三朝医療センター 内科
岩垣 尚史 岡山大学医学部・歯学部附属病院三朝医療センター 内科
永田 拓也 岡山大学医学部・学部附属病院三朝医療センター 内科
藤井 誠 岡山大学医学部・歯学部附属病院三朝医療センター 内科
高田 真吾 岡山大学医学部・歯学部附属病院三朝医療センター リハビリテーション科
横井 正 岡山大学医学部・歯学部附属病院三朝医療センター リハビリテーション科
浜田 全紀 岡山大学医学部・歯学部附属病院三朝医療センター 内科
谷崎 勝朗 岡山大学医学部・歯学部附属病院三朝医療センター 内科
抄録
The low attenuation area (LAA) of the lungs on high resolution computed tomography (HRCT) was evaluated in 20 asthmatics (10 ex-smokers and 10 never-smokers) and 10 patients with pulmonary emphysema (all ex-smokers) by ventilatory function, lung volume, DLco, and a ratio of expiratory LAA/inspiratory LAA. 1 . The % LAA of the lungs on HRCT was significantly larger in patients with pulmonary emphysema(PE) than in those with asthma, but there was not significant difference in % LAA between ex-smokers and never-smokers of asthmatics. 2. A ratio of expiratory Winspiratory LAA was significantly higher in patients with PE than in those with asthma , and the ratio was significantly higher in ex-smokers of asthmatics than in never-smokers (p<0.05). 3 . The difference in % residual volume and % DLco was significant between asthma and PE , and between ex - smokers and never-smokers of asthmatics (% RV : p<0.05, DLco : p<0.05) . 4 . The difference in the values of % FVC, % FEV(1) .O, and FEV1.0% was significant between asthma and PE, but not significant between ex-smokers and never- smokers of asthmatics. The results suggest that the difference in a ratio of expiratory W inspiratory LAA, % RV and % DLco was significant between ex - smokers and never - smokers of asthmatics , and cigarette smoking induces more irreversible changes of the lungs.
キーワード
low attenuation area
asthma
pulmonary emphysema
cigarette smoking
ISSN
1348-1258
NCID
AA11840279