title: [Study on gas exchange of the patients with lung cancer in perioperation].
abstract: OBJECTIVE
  To study changes of gas exchange in perioperative patients with lung cancer.
  
  
  METHODS
  Indices including P/F, a/A, P50O2 and PaCO2 on gas exchange in 68 male patients(50-78 y) with lung cancer were monitored on preoperative day 1 2 3 and postoperative day 7.
  
  
  RESULTS
  Comparing with preoperation data P/F a/A decreased significantly in 3 days(P < 0.01) and PaCO2 P50O2 increased significantly on the day after operation (P < 0.01), especially in the group of pneumonectomy and abnormal ventilation, hypoxemia measured in preoperation.
  
  
  CONCLUSIONS
  The gas exchange of the patients with lung cancer reduced significantly in postoperative 3 days.
authors.affiliation: Cardiopulmonary Laboratory, Beijing Tuberculosis & Thoracic Research Institute, Beijing 101149.
authors.forename: B
authors.initials: B
authors.lastname: Li
authors.forename: Q
authors.initials: Q
authors.lastname: Li
authors.forename: S
authors.initials: S
authors.lastname: Xu
mesh_terms: D000368:Aged; D006801:Humans; D007432:Intraoperative Period; D008175:Lung Neoplasms / Q000503:physiopathology* / Q000601:surgery; D008297:Male; D008875:Middle Aged; D011659:Pulmonary Gas Exchange; D012129:Respiratory Function Tests