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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Correlation between pulmonary function and low attenuation area (LAA) on HRCT III patients with asthma in relation to smoking

光延 文裕 岡山大学医学部附属病院三朝分院内科 Kaken ID publons researchmap
御舩 尚志 岡山大学医学部附属病院三朝分院内科
保﨑 泰弘 岡山大学医学部附属病院三朝分院内科
芦田 耕三 岡山大学医学部附属病院三朝分院内科 Kaken ID researchmap
柘野 浩史 岡山大学医学部附属病院三朝分院内科
岡本 誠 岡山大学医学部附属病院三朝分院内科
高田 真吾 岡山大学医学部附属病院三朝分院内科 Kaken ID publons
横井 正 岡山大学医学部附属病院三朝分院内科
谷崎 勝朗 岡山大学医学部附属病院三朝分院内科
The influence of smoking on pulmonary function and emphysematous changes of the lung (percentage of attenuation area < -950 HU (% LAA) on high resolution computed tomography (HRCT) was examined in 49 patients with bronchial asthma. 1. In patients with asthma, the % residual volume (RV) in many nonsmokers was less than 129%, in contrast, the % RV in many smokers was between 130% and 189% , which was higher than that in nonsmokers. 2. Significant correlations between % RV and 96LAA value, and between % RV and CT number were observed both in nonsmokers and smokers with asthma, in which as % RV more increased, % LAA value was larger, and CT number was lower. 3. % DLco value was lower in smoking patients with asthma, whose % RV was between 130% and 189% and larger than 190% , however, the % DLco value did not change in nonsmoking patients despite of higher valure in % RV. 4. A significant correlation was also observed between % FEV1.0 value and % RV both in smoking and nonsmoking patients with asthma; as % RV value more increased, % FEV1.0 value was lower. 5. Any correlation between % FVC value and % RV was not observed. These results suggest that smoking affects the % LAA of the lung on HRCT and % DLco in patients with asthma.
% LAA of the lungs