title: Postoperative Respiratory Function and Survival After Pneumonectomy in Dogs and Cats.
abstract: OBJECTIVE
  To describe indications for, and outcomes after, pneumonectomy in dogs and cats, including assessment of immediate postoperative respiratory function in comparison to dogs undergoing single lung lobectomy.
  
  
  METHODS
  Retrospective case series.
  
  
  METHODS
  Dogs (n=16) and cats (n=7) with naturally occurring pulmonary disease.
  
  
  METHODS
  Medical records (1990-2014) of dogs and cats undergoing right or left pneumonectomy were reviewed. Data retrieved included signalment, history, preoperative diagnostics, operative descriptions, postoperative data including respiratory function, and postdischarge outcomes. For respiratory function comparisons, medical records of dogs having undergone a single lung lobectomy via median sternotomy (n=15) or intercostal thoracotomy (n=15) were reviewed.
  
  
  RESULTS
  Twenty-three cases (16 dogs, 7 cats) were included. Pneumonectomy was performed for congenital (1 dog, 1 cat), neoplastic (8 dogs, 1 cat), and infectious (7 dogs, 5 cats) disease. Postoperative aspiration pneumonia occurred in 2 dogs; 15 of 16 dogs (94%) and 6/7 cats (86%) survived to hospital discharge. After pneumonectomy, dogs had a significantly higher postoperative PaO2 on 21% oxygen (P=.033) and lower postoperative A-a gradient (P=.004) compared to dogs undergoing single lung lobectomy. Survival times (right-censored at last follow-up) for dogs ranged from 2 days to 7 years (estimated median=1,868 days) and for cats from 1-585 days.
  
  
  CONCLUSIONS
  Dogs and cats have acceptable respiratory function immediately postoperatively and most have protracted long-term survival after pneumonectomy for a variety of pulmonary diseases.
authors.affiliation: Veterinary Medical Teaching Hospital, University of California-Davis, Davis, California.
authors.forename: Stephanie A
authors.initials: SA
authors.lastname: Majeski
authors.affiliation: Department of Surgical and Radiological Sciences, University of California-Davis, Davis, California.
authors.forename: Michele A
authors.initials: MA
authors.lastname: Steffey
authors.affiliation: Department of Surgical and Radiological Sciences, University of California-Davis, Davis, California.
authors.forename: Philipp D
authors.initials: PD
authors.lastname: Mayhew
authors.affiliation: Department of Surgical and Radiological Sciences, University of California-Davis, Davis, California.
authors.forename: Geraldine B
authors.initials: GB
authors.lastname: Hunt
authors.affiliation: Department of Clinical Studies, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
authors.forename: David E
authors.initials: DE
authors.lastname: Holt
authors.affiliation: Department of Clinical Studies, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
authors.forename: Jeffrey J
authors.initials: JJ
authors.lastname: Runge
authors.affiliation: Department of Population Health and Reproduction, School of Veterinary Medicine, University of California-Davis, Davis, California.
authors.forename: Philip H
authors.initials: PH
authors.lastname: Kass
authors.affiliation: Department of Surgical and Radiological Sciences, University of California-Davis, Davis, California.
authors.forename: Matthew
authors.initials: M
authors.lastname: Mellema
mesh_terms: D000818:Animals; D002371:Cat Diseases / Q000601:surgery*; D002415:Cats; D004283:Dog Diseases / Q000601:surgery*; D004285:Dogs; D005260:Female; D008168:Lung / Q000473:pathology; D008171:Lung Diseases / Q000601:surgery / Q000662:veterinary*; D008297:Male; D011013:Pneumonectomy / Q000662:veterinary*; D011183:Postoperative Complications / Q000662:veterinary*; D011184:Postoperative Period; D012189:Retrospective Studies; D013908:Thoracotomy; D016896:Treatment Outcome