Effect of a new heated and humidified breathing circuit with a fluid-warming device on intraoperative core temperature: a prospective randomized study.

Abstract:

BACKGROUND:The effect of the Mega Acer kit(@), a new heated and humidified breathing circuit (HHBC) containing a fluid-warming device, was investigated on intraoperative core temperature (T c). METHODS:A total of 102 patients undergoing elective craniotomies were randomly divided into three groups based on the breathing circuit used: a conventional breathing circuit (group C, n = 34), a Fisher & Paykel HHBC (group F, n = 34), and the Mega (group M, n = 34). From baseline to the end of the surgery, T c and infusion fluid temperature (T f) were recorded at 15-min intervals. If T c became lower than 35.5 °C, a forced-air warmer was used. RESULTS:Baseline temperatures were 36.7 ± 0.3, 36.6 ± 0.2, and 36.6 ± 0.2 °C in groups C, M, and F, respectively. T c at the end of surgery dropped from baseline values by 1.0 ± 0.4, 0.5 ± 0.5, and 0.8 ± 0.5 °C in groups C, M, and F, respectively. From 60 min of post-induction to the end of surgery, T c was higher in group M than group C (p < 0.05). From 105 min of post-induction to the end of surgery, T c was higher in group M than group F (p < 0.05). The number of patients receiving forced-air warmer and total forced-air warmer using time were significantly lower in group M than groups C and F (p < 0.05). T f was higher in group M than groups C and F throughout the study period (31.0 ± 1.0 vs. 23.5 ± 0.5 and 24.0 ± 0.4 °C; p < 0.01). CONCLUSIONS:The Mega significantly reduced the drop in intraoperative T c by delivering warm fluids, compared with the other breathing circuits tested. TRIAL REGISTRATION:Clinicaltrials.gov identifier: NCT01831843.

journal_name

J Anesth

journal_title

Journal of anesthesia

authors

Kim E,Lee SY,Lim YJ,Choi JY,Jeon YT,Hwang JW,Park HP

doi

10.1007/s00540-015-1994-z

subject

Has Abstract

pub_date

2015-08-01 00:00:00

pages

499-507

issue

4

eissn

0913-8668

issn

1438-8359

journal_volume

29

pub_type

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