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Chest, Vol 96, 307-311, Copyright © 1989 by American College of Chest Physicians

ARTICLES

Measurements of components of resistance to breathing

ST Chiang, J Green, WF Wang, YJ Yang, GM Shiao and SC King
Institute of Physiology, National Yang-Ming Medical College, Taipei, Taiwan, ROC.

Total respiratory resistance (Rrs), pulmonary resistance (RL), and airway resistance (Raw) of 12 male patients with chronic obstructive lung disease were measured by the partial occlusion method, intraesophageal balloon technique, and body plethysmography, respectively. Chest wall resistance (Rew) and lung tissue resistance (Rti) were computed. Percentages of Rew/Rrs, RL/Rrs, Raw/Rrs, Rti/Rrs, Raw/RL, and Rti/RL were calculated. The magnitude of the components of resistance to breathing of this study and the data appearing in the literature are compared. Wide variation between the data reported by various authors was observed. The possible causes of these variations are discussed.




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Copyright © 1989 by the American College of Chest Physicians.