Warming of insufflation gas during laparoscopic hysterectomy

Effect on body temperature and the autonomic nervous system

K. Nelskylä, Arvi Yli-Hankala, J. Sjöberg, Ilkka Korhonen, Kari Korttila

Research output: Contribution to journalArticleScientificpeer-review

23 Citations (Scopus)

Abstract

Background: Hypothermia is a known side effect of laparoscopic operations. It may increase the sympathetic activity of the autonomic nervous system (ANS), which can be evaluated non‐invasively by heart rate variability (HRV). We tested the hypothesis that warming of the delivered CO2 insufflation gas helps to maintain the normal body temperature.

Methods: Thirty‐seven healthy women undergoing laparoscopic hysterectomy were randomized into heated (37°C, n=18) or unheated (24°C, n=19) gas insufflation groups. Anesthesia was induced with propofol and maintained with sevoflurane in O2‐air. Tympanic (ttymp) temperature was recorded before, during and after the operation. Nasopharyngeal (tnaso) temperature was recorded only during operation. Electrocardiograms were recorded and stored to evaluate changes in HRV. The individual changes in HRV were compared after decibel (dB) transformation.

Results: A median decrease in tympanic temperatures during the operation was 0.7°C in the heated and 0.3°C in the unheated group (P=0.01 between groups), and in nasopharyngeal 0.3°C and 0.1°C (P=0.03), respectively. Preanesthetic tympanic values were reached within 90 min after anesthesia. After dB transformation, HRV high frequency power differed between the groups. It was better preserved in the patients receiving unheated gas.

Conclusion: The heating of insufflation gas does not prevent a decrease in body temperature and is thus unnecessary during laparoscopic hysterectomy.

Original languageEnglish
Pages (from-to)974-978
Number of pages5
JournalActa Anaesthesiologica Scandinavica
Volume43
Issue number10
DOIs
Publication statusPublished - 1999
MoE publication typeA1 Journal article-refereed

Fingerprint

Insufflation
Autonomic Nervous System
Body Temperature
Hysterectomy
Heart Rate
Gases
Temperature
Anesthesia
Propofol
Hypothermia
Heating
Electrocardiography

Cite this

Nelskylä, K. ; Yli-Hankala, Arvi ; Sjöberg, J. ; Korhonen, Ilkka ; Korttila, Kari. / Warming of insufflation gas during laparoscopic hysterectomy : Effect on body temperature and the autonomic nervous system. In: Acta Anaesthesiologica Scandinavica. 1999 ; Vol. 43, No. 10. pp. 974-978.
@article{41a44110b5014bcfb613b2126430cb9a,
title = "Warming of insufflation gas during laparoscopic hysterectomy: Effect on body temperature and the autonomic nervous system",
abstract = "Background: Hypothermia is a known side effect of laparoscopic operations. It may increase the sympathetic activity of the autonomic nervous system (ANS), which can be evaluated non‐invasively by heart rate variability (HRV). We tested the hypothesis that warming of the delivered CO2 insufflation gas helps to maintain the normal body temperature.Methods: Thirty‐seven healthy women undergoing laparoscopic hysterectomy were randomized into heated (37°C, n=18) or unheated (24°C, n=19) gas insufflation groups. Anesthesia was induced with propofol and maintained with sevoflurane in O2‐air. Tympanic (ttymp) temperature was recorded before, during and after the operation. Nasopharyngeal (tnaso) temperature was recorded only during operation. Electrocardiograms were recorded and stored to evaluate changes in HRV. The individual changes in HRV were compared after decibel (dB) transformation.Results: A median decrease in tympanic temperatures during the operation was 0.7°C in the heated and 0.3°C in the unheated group (P=0.01 between groups), and in nasopharyngeal 0.3°C and 0.1°C (P=0.03), respectively. Preanesthetic tympanic values were reached within 90 min after anesthesia. After dB transformation, HRV high frequency power differed between the groups. It was better preserved in the patients receiving unheated gas.Conclusion: The heating of insufflation gas does not prevent a decrease in body temperature and is thus unnecessary during laparoscopic hysterectomy.",
author = "K. Nelskyl{\"a} and Arvi Yli-Hankala and J. Sj{\"o}berg and Ilkka Korhonen and Kari Korttila",
year = "1999",
doi = "10.1034/j.1399-6576.1999.431002.x",
language = "English",
volume = "43",
pages = "974--978",
journal = "Acta Anaesthesiologica Scandinavica",
issn = "0001-5172",
publisher = "Blackwell Munksgaard",
number = "10",

}

Warming of insufflation gas during laparoscopic hysterectomy : Effect on body temperature and the autonomic nervous system. / Nelskylä, K.; Yli-Hankala, Arvi; Sjöberg, J.; Korhonen, Ilkka; Korttila, Kari.

In: Acta Anaesthesiologica Scandinavica, Vol. 43, No. 10, 1999, p. 974-978.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Warming of insufflation gas during laparoscopic hysterectomy

T2 - Effect on body temperature and the autonomic nervous system

AU - Nelskylä, K.

AU - Yli-Hankala, Arvi

AU - Sjöberg, J.

AU - Korhonen, Ilkka

AU - Korttila, Kari

PY - 1999

Y1 - 1999

N2 - Background: Hypothermia is a known side effect of laparoscopic operations. It may increase the sympathetic activity of the autonomic nervous system (ANS), which can be evaluated non‐invasively by heart rate variability (HRV). We tested the hypothesis that warming of the delivered CO2 insufflation gas helps to maintain the normal body temperature.Methods: Thirty‐seven healthy women undergoing laparoscopic hysterectomy were randomized into heated (37°C, n=18) or unheated (24°C, n=19) gas insufflation groups. Anesthesia was induced with propofol and maintained with sevoflurane in O2‐air. Tympanic (ttymp) temperature was recorded before, during and after the operation. Nasopharyngeal (tnaso) temperature was recorded only during operation. Electrocardiograms were recorded and stored to evaluate changes in HRV. The individual changes in HRV were compared after decibel (dB) transformation.Results: A median decrease in tympanic temperatures during the operation was 0.7°C in the heated and 0.3°C in the unheated group (P=0.01 between groups), and in nasopharyngeal 0.3°C and 0.1°C (P=0.03), respectively. Preanesthetic tympanic values were reached within 90 min after anesthesia. After dB transformation, HRV high frequency power differed between the groups. It was better preserved in the patients receiving unheated gas.Conclusion: The heating of insufflation gas does not prevent a decrease in body temperature and is thus unnecessary during laparoscopic hysterectomy.

AB - Background: Hypothermia is a known side effect of laparoscopic operations. It may increase the sympathetic activity of the autonomic nervous system (ANS), which can be evaluated non‐invasively by heart rate variability (HRV). We tested the hypothesis that warming of the delivered CO2 insufflation gas helps to maintain the normal body temperature.Methods: Thirty‐seven healthy women undergoing laparoscopic hysterectomy were randomized into heated (37°C, n=18) or unheated (24°C, n=19) gas insufflation groups. Anesthesia was induced with propofol and maintained with sevoflurane in O2‐air. Tympanic (ttymp) temperature was recorded before, during and after the operation. Nasopharyngeal (tnaso) temperature was recorded only during operation. Electrocardiograms were recorded and stored to evaluate changes in HRV. The individual changes in HRV were compared after decibel (dB) transformation.Results: A median decrease in tympanic temperatures during the operation was 0.7°C in the heated and 0.3°C in the unheated group (P=0.01 between groups), and in nasopharyngeal 0.3°C and 0.1°C (P=0.03), respectively. Preanesthetic tympanic values were reached within 90 min after anesthesia. After dB transformation, HRV high frequency power differed between the groups. It was better preserved in the patients receiving unheated gas.Conclusion: The heating of insufflation gas does not prevent a decrease in body temperature and is thus unnecessary during laparoscopic hysterectomy.

U2 - 10.1034/j.1399-6576.1999.431002.x

DO - 10.1034/j.1399-6576.1999.431002.x

M3 - Article

VL - 43

SP - 974

EP - 978

JO - Acta Anaesthesiologica Scandinavica

JF - Acta Anaesthesiologica Scandinavica

SN - 0001-5172

IS - 10

ER -