title: Adverse effect of complete thoracic evacuation during chronic pneumothorax in a dog.
abstract: OBJECTIVE
  To describe an unusual response to evacuation of a chronic pneumothorax in a dog.
  
  
  METHODS
  Resolution of a pneumothorax is usually associated with lung expansion and a marked improvement in pulmonary function. In the case presented here, evacuation of a chronic pneumothorax improved oxygenation, but markedly impaired ventilation.
  
  
  CONCLUSIONS
  This is a previously unreported complication associated with the treatment of pneumothorax in dogs. It suggests that in some cases of chronic pneumothorax, total evacuation of the pleural air pocket may improve oxygenation but ventilation deteriorates and increases PCO2, causing further complications.
authors.affiliation: Veterinary Medical Teaching Hospital, University of California, Davis, CA 95616-8747, USA. plboscan@ucdavis.edu
authors.forename: Pedro
authors.initials: P
authors.lastname: Boscan
authors.forename: Zara
authors.initials: Z
authors.lastname: Watson
authors.forename: Taylor
authors.initials: T
authors.lastname: Spangler
authors.forename: Peter J
authors.initials: PJ
authors.lastname: Walsh
authors.forename: Steve C
authors.initials: SC
authors.lastname: Haskins
mesh_terms: D000818:Animals; D003937:Diagnosis, Differential; D004283:Dog Diseases / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D004285:Dogs; D005260:Female; D011030:Pneumothorax / Q000601:surgery / Q000662:veterinary*; D001261:Pulmonary Atelectasis / Q000175:diagnosis / Q000209:etiology / Q000662:veterinary*; D011859:Radiography; D019616:Thoracic Surgical Procedures / Q000009:adverse effects / Q000662:veterinary*