title: The effect of warmed inspired gases on body temperature during arthroscopic shoulder surgery under general anesthesia.
abstract: BACKGROUND
  Perioperative hypothermia can develop easily during shoulder arthroscopy, because cold irrigation can directly influence core body temperature. The authors investigated whether active warming and humidification of inspired gases reduces falls in core body temperature and allows redistribution of body heat in patients undergoing arthroscopic shoulder surgery under general anesthesia.
  
  
  METHODS
  Patients scheduled for arthroscopic shoulder surgery were randomly assigned to receive either room temperature inspired gases using a conventional respiratory circuit (the control group, n = 20) or inspired gases humidified and heated using a humidified and electrically heated circuit (HHC) (the heated group, n = 20).
  
  
  RESULTS
  Core temperatures were significantly lower in both groups from 30 min after anesthesia induction, but were significantly higher in the heated group than in the control group from 75 to 120 min after anesthesia induction.
  
  
  CONCLUSIONS
  In this study the use of a humidified and electrically heated circuit did not prevent core temperature falling during arthroscopic shoulder surgery, but it was found to decrease reductions in core temperature from 75 min after anesthesia induction.
authors.affiliation: Department of Anesthesiology and Pain Medicine, Gachon University Gil Medical Center, Incheon, Korea.
authors.forename: Youn Yi
authors.initials: YY
authors.lastname: Jo
authors.forename: Hong Soon
authors.initials: HS
authors.lastname: Kim
authors.forename: Young Jin
authors.initials: YJ
authors.lastname: Chang
authors.forename: Soon Young
authors.initials: SY
authors.lastname: Yun
authors.forename: Hyun Jeong
authors.initials: HJ
authors.lastname: Kwak
keywords: Arthroscopy; Circuit; General anesthesia; Shoulder; Temperature
references.citation: Anesthesiology. 2008 Jan;108(1):71-7
references.pmid: 18156884
references.citation: Anesth Analg. 1999 Aug;89(2):462-5
references.pmid: 10439767
references.citation: N Engl J Med. 1996 May 9;334(19):1209-15
references.pmid: 8606715
references.citation: Best Pract Res Clin Anaesthesiol. 2003 Dec;17(4):485-98
references.pmid: 14661653
references.citation: Arthroscopy. 2009 Jan;25(1):24-9
references.pmid: 19111215
references.citation: Anaesthesia. 1994 Mar;49(3):205-7
references.pmid: 8147511
references.citation: Anesthesiology. 1995 Mar;82(3):662-73
references.pmid: 7879935
references.citation: Korean J Anesthesiol. 2011 Apr;60(4):250-4
references.pmid: 21602974
references.citation: Anesthesiology. 1991 Feb;74(2):226-32
references.pmid: 1990897
references.citation: Lancet. 1996 Feb 3;347(8997):289-92
references.pmid: 8569362
references.citation: Br J Anaesth. 1998 Dec;81(6):861-4
references.pmid: 10211009
references.citation: Chest. 1997 Oct;112(4):1055-9
references.pmid: 9377917
references.citation: Arthroscopy. 2009 May;25(5):510-4
references.pmid: 19409309
references.citation: Anesthesiology. 1993 Mar;78(3):468-76
references.pmid: 8457047
references.citation: Anesthesiology. 1994 Mar;80(3):502-8
references.pmid: 8141446
references.citation: Korean J Anesthesiol. 2011 Aug;61(2):112-6
references.pmid: 21927679