title: Decreased fresh gas flow cannot compensate for an increased operating room temperature in maintaining body temperature during donor hepatectomy for living liver donor hepatectomy.
abstract: BACKGROUND
  The purpose of this study was to compare the effect of various combinations of fresh gas flow (FGF) of anesthesia and different ambient operation room temperatures (ORT) on changes in nasopharyngeal temperature (NT) among living donors undergoing partial hepatectomy.
  
  
  METHODS
  The anesthesia records of 167 patients were reviewed retrospectively. The patients were allocated into 4 groups: GI (n=37): isoflurane in 2 L FGF and at typical ambient ORT (19 degrees C-21 degrees C); GII (n=11) isoflurane in 1 L FGF and 1 L air at typical ORT; GIII (n=31) isoflurane in 0.5 L FGF at typical ORT; and GIV (n=88) isoflurane in 0.5 L FGF at ORT of 24 degrees C. The changes in NT were compared using a two-way repeated measure analysis of variance (ANOVA) followed by Bonferroni post hoc tests.
  
  
  RESULTS
  Changes of NTs of GIV were significantly higher compared with the other 3 groups, whereas the changes of NTs were the same among GI, GII, and GIII.
  
  
  CONCLUSIONS
  FGF of different volumes seemed to have no significant effect on intraoperative changes of NT in regular ORT. Low-flow anesthesia combined with ORT of 24 degrees C provided significantly higher NTs at all measured points compared with GI, GII, and GIII.
authors.affiliation: Department of Anesthesiology, Chang Gung Memorial Hospital, Kaohsiung Medical Center, Chang Gung University, Medicine College, Kaohsiung, Taiwan.
authors.forename: K-W
authors.initials: KW
authors.lastname: Cheng
authors.forename: C-H
authors.initials: CH
authors.lastname: Wang
authors.forename: C-L
authors.initials: CL
authors.lastname: Chen
authors.forename: B
authors.initials: B
authors.lastname: Jawan
authors.forename: C-C
authors.initials: CC
authors.lastname: Wang
authors.forename: A M
authors.initials: AM
authors.lastname: Concejero
authors.forename: S-H
authors.initials: SH
authors.lastname: Wang
authors.forename: Y-W
authors.initials: YW
authors.lastname: Liu
authors.forename: C-C
authors.initials: CC
authors.lastname: Yong
authors.forename: C-H
authors.initials: CH
authors.lastname: Yang
authors.forename: C-J
authors.initials: CJ
authors.lastname: Huang
mesh_terms: D000328:Adult; D016063:Blood Loss, Surgical; D001831:Body Temperature / Q000502:physiology; D001833:Body Temperature Regulation; D004231:Diuresis; D006361:Heating / Q000379:methods*; D006498:Hepatectomy / Q000379:methods*; D006801:Humans; D007035:Hypothermia / Q000517:prevention & control; D007432:Intraoperative Period; D019520:Living Donors; D009305:Nasopharynx / Q000502:physiology; D009873:Operating Rooms / Q000592:standards*; D012189:Retrospective Studies