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Continuous monitoring of fetal scalp temperature in labor: a new technology validated in a fetal lamb model.

Lavesson, Tony LU ; Amer-Wåhlin, Isis; Hansson, Stefan LU ; Ley, David LU ; Marsal, Karel LU and Olofsson, Per LU (2010) In Acta Obstetricia et Gynecologica Scandinavica 89(6). p.807-812
Abstract
OBJECTIVE: To evaluate a new technical equipment for continuous recording of human fetal scalp temperature in labor. DESIGN: Experimental animal study. METHODS: Two temperature sensors were placed subcutaneously and intracranially on the forehead of 10 fetal lambs and connected to a temperature monitoring system. The system records temperatures simultaneously on-line and stores data to be analyzed off-line. Throughout the experiment, the fetus was oxygenated via the umbilical cord circulation. Asphyxia was induced by intermittent cord compression, as assessed by pH in jugular vein blood. The intracranial (ICT) and subcutaneous (SCT) temperatures were compared with simple and polynomial regression analyses. MAIN OUTCOME MEASURES: Absolute... (More)
OBJECTIVE: To evaluate a new technical equipment for continuous recording of human fetal scalp temperature in labor. DESIGN: Experimental animal study. METHODS: Two temperature sensors were placed subcutaneously and intracranially on the forehead of 10 fetal lambs and connected to a temperature monitoring system. The system records temperatures simultaneously on-line and stores data to be analyzed off-line. Throughout the experiment, the fetus was oxygenated via the umbilical cord circulation. Asphyxia was induced by intermittent cord compression, as assessed by pH in jugular vein blood. The intracranial (ICT) and subcutaneous (SCT) temperatures were compared with simple and polynomial regression analyses. MAIN OUTCOME MEASURES: Absolute and delta ICT and SCT changes. RESULTS: ICT and SCT were both successfully recorded in all 10 cases. With increasing acidosis, the temperatures decreased. The correlation coefficient between ICT and SCT had a range of 0.76-0.97 (median 0.88) by simple linear regression and 0.80-0.99 (median 0.89) by second grade polynomial regression. After an initial system stabilization period of 10 minutes, the delta temperature values (ICT minus SCT) were less than 1.5 degrees C throughout the experiment in all but one case. CONCLUSIONS: The fetal forehead SCT mirrored the ICT closely, with the ICT being higher. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Acta Obstetricia et Gynecologica Scandinavica
volume
89
issue
6
pages
807 - 812
publisher
Wiley-Blackwell
external identifiers
  • WOS:000282890000013
  • PMID:20504083
  • Scopus:77952918911
ISSN
1600-0412
DOI
10.3109/00016341003758948
language
English
LU publication?
yes
id
ff5af05b-b0b1-4ea2-b462-d383b2950a47 (old id 1609904)
alternative location
http://www.ncbi.nlm.nih.gov/pubmed/20504083?dopt=Abstract
date added to LUP
2010-06-02 11:28:18
date last changed
2016-10-13 04:24:15
@misc{ff5af05b-b0b1-4ea2-b462-d383b2950a47,
  abstract     = {OBJECTIVE: To evaluate a new technical equipment for continuous recording of human fetal scalp temperature in labor. DESIGN: Experimental animal study. METHODS: Two temperature sensors were placed subcutaneously and intracranially on the forehead of 10 fetal lambs and connected to a temperature monitoring system. The system records temperatures simultaneously on-line and stores data to be analyzed off-line. Throughout the experiment, the fetus was oxygenated via the umbilical cord circulation. Asphyxia was induced by intermittent cord compression, as assessed by pH in jugular vein blood. The intracranial (ICT) and subcutaneous (SCT) temperatures were compared with simple and polynomial regression analyses. MAIN OUTCOME MEASURES: Absolute and delta ICT and SCT changes. RESULTS: ICT and SCT were both successfully recorded in all 10 cases. With increasing acidosis, the temperatures decreased. The correlation coefficient between ICT and SCT had a range of 0.76-0.97 (median 0.88) by simple linear regression and 0.80-0.99 (median 0.89) by second grade polynomial regression. After an initial system stabilization period of 10 minutes, the delta temperature values (ICT minus SCT) were less than 1.5 degrees C throughout the experiment in all but one case. CONCLUSIONS: The fetal forehead SCT mirrored the ICT closely, with the ICT being higher.},
  author       = {Lavesson, Tony and Amer-Wåhlin, Isis and Hansson, Stefan and Ley, David and Marsal, Karel and Olofsson, Per},
  issn         = {1600-0412},
  language     = {eng},
  number       = {6},
  pages        = {807--812},
  publisher    = {ARRAY(0x7fb2da8)},
  series       = {Acta Obstetricia et Gynecologica Scandinavica},
  title        = {Continuous monitoring of fetal scalp temperature in labor: a new technology validated in a fetal lamb model.},
  url          = {http://dx.doi.org/10.3109/00016341003758948},
  volume       = {89},
  year         = {2010},
}