title: Longitudinal pulmonary function changes in pigeon breeders.
abstract: We studied 15 subjects (14 men and one woman; seven symptomatic and eight asymptomatic) at three- to four-year intervals from 1967 through 1985 (18 years) to determine if continued pigeon antigen exposure in these groups was associated with a decline in pulmonary function greater than expected in healthy individuals. We collected immunologic studies at the initial visit, performed sequential pulmonary function studies and obtained chest radiographs. After compensating for the normal changes expected with increasing age, we found the declines in FVC, FEV1, and Dsb in the symptomatic group were nearly four times greater than expected. There was no significant difference in the decline of pulmonary function between asymptomatic subjects and the normal predicted declines with increasing age. We conclude that, if an individual has episodes of acute hypersensitivity pneumonitis, long-term exposure to pigeon antigens will result in an accelerated decline in pulmonary function.
authors.affiliation: Department of Medicine, LDS Hospital, Salt Lake City 84132.
authors.forename: C D
authors.initials: CD
authors.lastname: Schmidt
authors.forename: R L
authors.initials: RL
authors.lastname: Jensen
authors.forename: L T
authors.initials: LT
authors.lastname: Christensen
authors.forename: R O
authors.initials: RO
authors.lastname: Crapo
authors.forename: J J
authors.initials: JJ
authors.lastname: Davis
mesh_terms: D000328:Adult; D000542:Alveolitis, Extrinsic Allergic / Q000503:physiopathology*; D000818:Animals; D001716:Bird Fancier's Lung / Q000503:physiopathology*; D010856:Columbidae / Q000276:immunology; D005260:Female; D005541:Forced Expiratory Volume; D006801:Humans; D008137:Longitudinal Studies; D008168:Lung / Q000503:physiopathology*; D008297:Male; D008875:Middle Aged; D011653:Pulmonary Diffusing Capacity; D012129:Respiratory Function Tests; D012130:Respiratory Hypersensitivity / Q000503:physiopathology; D014797:Vital Capacity