Clinical use of the measurement of airway resistance during spontaneous respiration.
Airway resistance was measured during spontaneous respiration in healthy smokers and patients with chronic obstructive pulmonary disease, and the relationship between the airway resistance and respiratory frequency was examined. No significant difference was observed between the airway resistance in smokers and nonsmokers. In the chronic obstructive pulmonary disease group, patients with pulmonary emphysema had highest airway resistance. The determination of airway resistance during spontaneous respiration appears to be a very useful, noninvasive method of pulmonary function testing.
D000328:Adult; D000367:Age Factors; D000368:Aged; D000403:Airway Resistance; D001249:Asthma / Q000503:physiopathology; D001991:Bronchitis / Q000503:physiopathology; D005260:Female; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000503:physiopathology*; D008297:Male; D010993:Plethysmography, Whole Body / Q000379:methods; D011656:Pulmonary Emphysema / Q000503:physiopathology; D012119:Respiration; D012146:Rest; D012907:Smoking