@article{oai:twinkle.repo.nii.ac.jp:00016431,
 author = {朝戸, 裕子 and 吉野, 克樹 and 金野, 公郎},
 issue = {1/2},
 journal = {東京女子医科大学雑誌},
 month = {Feb},
 note = {The pathophysiological study on insufficiency of cough seen in aged patients was done. Flow-volume curves for patients with chronic lung disease were obtained during cough and maximum expiratory effort. The flow during cough was equal to maximum expiratory flow (V^.max) and V^.max decreased with age. The chest wall configuration during cough, estimated by Konno-Mead diagram, showed expiratory muscle weakness and insufficient closure of vocal cords in aged patients. Both longitudinal shape of trachea obtained by magnetic resonance imaging (MRI) and cross sectional area of trachea by CT scan were evaluated. Longitudinal shape of trachea became curved with age. These results suggest that deformation of trachea may also contribute to the decrease in the flow during cough in aged patients.},
 pages = {49--54},
 title = {高齢者の咳嗽機能低下に関する研究},
 volume = {67},
 year = {1997}
}