title: Effect of anesthetic breathing circuit type on thermal loss in cats during inhalation anesthesia for ovariohysterectomy.
abstract: OBJECTIVE
  To compare the effects of a nonrebreathing circuit versus a reduced volume circle anesthetic breathing circuit on body temperature change in cats during inhalation anesthesia for ovariohysterectomy.
  
  
  METHODS
  Randomized, controlled clinical trial.
  
  
  METHODS
  141 female domestic cats hospitalized for routine ovariohysterectomy.
  
  
  METHODS
  Cats were randomly assigned to receive inhalation anesthetics from either a nonrebreathing circuit or a reduced volume circle system with oxygen flow rates of 200 and 30 mL/kg/min (90.9 and 13.6 mL/lb/min), respectively. Body temperatures were monitored throughout the anesthetic period via an intrathoracic esophageal probe placed orally into the esophagus to the level of the heart base.
  
  
  RESULTS
  No difference in body temperature was found between the 2 treatment groups at any measurement time. The duration of procedure had a significant effect on body temperature regardless of the type of anesthetic circuit used.
  
  
  CONCLUSIONS
  Duration of the procedure rather than the type of anesthetic circuit used for inhalation anesthesia was more influential on thermal loss in cats undergoing ovariohysterectomy.
authors.affiliation: Department of Clinical Sciences, College of Veterinary Medicine, Kansas State University, Manhattan, KS 66506, USA. ckkelly@iastate.edu
authors.forename: Christopher K
authors.initials: CK
authors.lastname: Kelly
authors.forename: David S
authors.initials: DS
authors.lastname: Hodgson
authors.forename: Rose M
authors.initials: RM
authors.lastname: McMurphy
mesh_terms: D000769:Anesthesia, Inhalation / Q000379:methods / Q000662:veterinary*; D018685:Anesthetics, Inhalation / Q000008:administration & dosage / Q000009:adverse effects*; D000818:Animals; D001831:Body Temperature / Q000187:drug effects*; D002415:Cats / Q000502:physiology* / Q000601:surgery; D005260:Female; D007035:Hypothermia / Q000139:chemically induced / Q000517:prevention & control / Q000662:veterinary; D007044:Hysterectomy / Q000662:veterinary*; D010052:Ovariectomy / Q000662:veterinary*; D011897:Random Allocation
chemical_list: D018685:Anesthetics, Inhalation