[Bronchial resistance and its determining factors in middle and old age].
In 65 apparently healthy elderly and old subjects (aged 60-89) and 26 young ones (aged 18-35) the bronchial resistance (Raw) was determined by means of simultaneous recording of esophageal pressure and a pneumotachogram. In the aged an increase of Raw, especially during expiration, and a decrease in specific conductance of lungs were found. In the group of young subjects the Raw was increased in women. In the aged the sex differences in Raw were levelled.
Ivanov
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D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000375:Aging / Q000502:physiology*; D000403:Airway Resistance; D001980:Bronchi / Q000502:physiology*; D004947:Esophagus / Q000502:physiology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011312:Pressure; D012016:Reference Values; D012129:Respiratory Function Tests; D012727:Sex Characteristics