title: [Ventilatory and gas exchange functions of the lungs in occupational and other pulmonary diseases].
abstract: OBJECTIVE
  To study lung ventilation and gas exchange in interstitional and obstructive diseases of dust-induced and non-occupational origin for correction of pulmonary diseases.
  
  
  METHODS
  Diffuse lung capacity (Erich Jaeger unit) and biomechanical properties of the ventilation system (total plethysmography on the bodyplethysmograph made by Erich Jaeger) were investigated in 132 patients including 87 with occupational dust-induced pulmonary diseases (pneumoconiosis, dust bronchitis, exogenic allergic alveolitis, bronchial asthma) and 45 patients with non-occupational diseases: sarcoidosis (n = 28), exogenic allergic alveolitis (n = 10) and bronchial asthma (n = 7).
  
  
  RESULTS
  The changes were of the same type but different severity. Diffuse capacity was subnormal in all the groups, most of all in patients with exogenic allergic alveolitis and sarcoidosis of stage 2-4. In patients with occupational diseases DLCO was reduced, residual volume, total lung capacity were elevated, they had hypoxemia.
  
  
  CONCLUSIONS
  The changes in patients with dust-induced diseases of the lungs may be interpreted primarily as disorders of distribution, imbalance between ventilation and perfusion. Diffusion disorders in patients with alveolitis and sarcoidosis correlated with changes in alveolar-capillary membrane.
authors.forename: P N
authors.initials: PN
authors.lastname: Liubchenko
authors.forename: V V
authors.initials: VV
authors.lastname: Massarygin
authors.forename: S A
authors.initials: SA
authors.lastname: Terpigorev
authors.forename: E B
authors.initials: EB
authors.lastname: Shirokova
authors.forename: O V
authors.initials: OV
authors.lastname: Shumskaia
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010991:Plethysmography; D011009:Pneumoconiosis / Q000503:physiopathology*; D011379:Prognosis; D029424:Pulmonary Disease, Chronic Obstructive / Q000503:physiopathology*; D011659:Pulmonary Gas Exchange / Q000502:physiology*; D017565:Sarcoidosis, Pulmonary / Q000503:physiopathology*; D012720:Severity of Illness Index; D014109:Total Lung Capacity / Q000502:physiology*