title: Regional lung clearance of excessive bronchial secretions during chest physiotherapy in patients with stable chronic airways obstruction.
abstract: Clearance of excessive bronchial secretions labelled with inhaled radioactive polystyrene particles has been directly measured with a gamma-camera linked to a computer. Chest physiotherapy significantly increased clearance from central, intermediate, and peripheral lung regions and sputum yield. These findings confirm the value of this form of treatment, which has hitherto been in doubt, in removing excessive bronchial secretions from all lung regions and in aiding their expectoration.
mesh_terms: D000336:Aerosols; D000368:Aged; D000402:Airway Obstruction / Q000628:therapy*; D001980:Bronchi / Q000378:metabolism*; D002908:Chronic Disease; D002986:Clinical Trials as Topic; D003936:Diagnosis, Computer-Assisted; D005260:Female; D006801:Humans; D007553:Isotope Labeling; D008168:Lung / Q000503:physiopathology*; D008297:Male; D008657:Metabolic Clearance Rate; D008875:Middle Aged; D008991:Monitoring, Physiologic; D011137:Polystyrenes / Q000378:metabolism; D012138:Respiratory Therapy / Q000379:methods*; D013183:Sputum / Q000378:metabolism*; D013667:Technetium; D014732:Vibration / Q000627:therapeutic use*
chemical_list: D000336:Aerosols; D011137:Polystyrenes; D013667:Technetium