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Temperature change in children undergoing magnetic resonance imaging-An observational cohort study

Thurid Waagstein Madsen1,2, Martin Kryspin Sørensen1, Pernille Fevejle Cromhout3

  • 1Department of Neuroanaesthesiology, Rigshospitalet, Copenhagen University Hospital, Copenhagen University, Copenhagen, Denmark.

Paediatric Anaesthesia
|April 2, 2022
PubMed

Insights

Children undergoing magnetic resonance imaging (MRI) with anesthesia or sedation rarely experience significant body temperature increases. Longer MRI scan durations were associated with a slight rise in body temperature.

Area of Science:

  • Pediatric Anesthesiology
  • Medical Imaging Safety
  • Thermoregulation in Children

Background:

  • Magnetic resonance imaging (MRI) necessitates anesthesia or sedation for pediatric immobility.
  • MRI may elevate body temperature, while anesthesia/sedation can decrease it, creating a complex thermoregulatory challenge.

Purpose of the Study:

  • To investigate body temperature changes in children undergoing anesthesia or sedation for MRI.
  • To identify factors associated with temperature fluctuations during pediatric MRI procedures.

Main Methods:

  • Prospective observational study including 74 children (12 weeks to 12 years).
  • Tympanic body temperature measured before and after MRI.
  • Statistical analysis (linear and logistic regression) used to evaluate associations with patient and procedure factors.

Main Results:

  • Only 5% of children experienced a temperature increase of ≥0.5°C.
  • The mean temperature difference was -0.24°C for all children.
  • A positive correlation was found between longer imaging duration and temperature difference (unadjusted coefficient 0.26).

Conclusions:

  • Clinically significant body temperature increases are uncommon in sedated or anesthetized children during MRI.
  • Extended MRI scan duration may be a factor contributing to a slight increase in body temperature.
Abstract

Keywords:
body temperaturegeneral anesthesiamagnetic resonance imagingpediatrics

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