title: Severe hyperthermia, hypernatremia, and early postoperative death after transethmoidal cavitron ultrasonic surgical aspirator (CUSA)-assisted diencephalic mass removal in 4 dogs and 2 cats.
abstract: OBJECTIVE
  To report clinical findings including severe hyperthermia and hypernatremia after transethmoidal Cavitron ultrasonic surgical aspirator (CUSA)-assisted diencephalic mass removal.
  
  
  METHODS
  Retrospective case series.
  
  
  METHODS
  Dogs (n = 4) and 2 cats.
  
  
  METHODS
  Medical records (1997-2003) of dogs and cats that had transethmoidal CUSA-assisted diencephalic mass removal were reviewed. Retrieved data were: history, signalment, blood work, neurologic examination findings, MRI results, histopathology, postoperative complications, pre- and postoperative medical therapy, and outcome.
  
  
  RESULTS
  Tumor types included: meningioma (n = 3), choroid plexus papilloma (1), astrocytoma (1), and pituitary macroadenoma (1). Median onset of hyperthermia was 3.5 hours (range: 1-6 hours) after extubation; median high temperature at onset was 40.3°C, (range: 39.6-41.7°C). Median onset of hypernatremia (median, 172 mmol/L; range: 168-196 mmol/L) was 4.5 hours (range: 1-9 hours) after extubation. Median time of death after hyperthermia was 10.5 hours (range: 6-13 hours) and after extubation was 13.5 hours (range: 11-15 hours).
  
  
  CONCLUSIONS
  Transethmoidal CUSA-assisted diencephalic mass removal is associated with early postoperative hyperthermia, hypernatremia, and death, and cannot be recommended.
authors.affiliation: Department of Surgery, Long Island Veterinary Specialists, Plainview, New York.
authors.forename: Dominic J
authors.initials: DJ
authors.lastname: Marino
authors.forename: Curtis W
authors.initials: CW
authors.lastname: Dewey
authors.forename: Catherine A
authors.initials: CA
authors.lastname: Loughin
authors.forename: Leonard J
authors.initials: LJ
authors.lastname: Marino
mesh_terms: D000236:Adenoma / Q000601:surgery / Q000662:veterinary; D000818:Animals; D001254:Astrocytoma / Q000601:surgery / Q000662:veterinary; D001932:Brain Neoplasms / Q000601:surgery / Q000662:veterinary*; D002371:Cat Diseases / Q000601:surgery*; D002415:Cats; D004283:Dog Diseases / Q000601:surgery*; D004285:Dogs; D017809:Fatal Outcome; D005260:Female; D005334:Fever / Q000209:etiology / Q000662:veterinary; D006955:Hypernatremia / Q000209:etiology / Q000662:veterinary; D008297:Male; D008579:Meningioma / Q000601:surgery / Q000662:veterinary; D010212:Papilloma / Q000601:surgery / Q000662:veterinary; D011183:Postoperative Complications / Q000662:veterinary; D012189:Retrospective Studies; D013396:Suction; D018084:Ultrasonography, Interventional / Q000662:veterinary