Does Environmental Factors Affect Accuracy in Pre-hospital Non-invasive Temperature Measurement?
NCT ID: NCT02274597
Last Updated: 2015-04-27
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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COMPLETED
13 participants
OBSERVATIONAL
2014-03-31
2014-12-31
Brief Summary
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Detailed Description
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Healthy volunteers will be recruited. As reference value for core temperature we will use a standard rectal probe (Mon-a-Therm, General purpose Temperature Probe 12Fr/Ch, Covidien) attached to an external monitor. The study will be in a field setting in the mountains of Hemsedal, Norway.
For measuring the epitympanic temperature we will use the Metraux Thermometer (Walpoth, Galdikas et al. 1994). The Metraux Thermometer is widely used in pre-hospital care in Norway and internationally. The ear-sensor will after induction of anaesthesia be inserted according to the manufacturers specifications in the auditory canal and activated. The sensor is two tiny and soft metal wires covered in a plastic wrapping integrated in a soft rubber earplug. The depth of the measuring point is pre-set from the manufacture to be approximately 10 mm from the tympanic membrane. The display will then show the epitympanic temperature in real-time.
The volunteers will be exposed to four different scenarios. 1. Ambient air with no protection of head/measuring site. 2. Ambient air with local protection of measuring site. 3. Snow in the ear-canal before placing the thermometer (to resemble avalanche conditions). 4 Cold water in the ear canal (to resemble water immersion/submersion).
The temperature will be measured in degrees Celsius. A baseline will be established before exposing the volunteers to the different environmental factors. After exposure the temperature will be recorded every 15 seconds for a total of 10minutes.
Conditions
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Study Design
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COHORT
PROSPECTIVE
Study Groups
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Environmental impact on epitympanic temperature measurment
volunteers exposed to different environmental factors to simulate field settings
metraux epitympanic thermometer
accuracy of epitympanic temperature measurement in different environmental settings
Interventions
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metraux epitympanic thermometer
accuracy of epitympanic temperature measurement in different environmental settings
Eligibility Criteria
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Inclusion Criteria
* no medication
* healthy, no chronic illness
* no acute illness on study day
* No pathology in ear canal on otoscopy
Exclusion Criteria
* non-consent
18 Years
60 Years
ALL
Yes
Sponsors
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Oslo University Hospital
OTHER
Responsible Party
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Principal Investigators
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Leiv Arne Rosseland, MD,Phd
Role: STUDY_DIRECTOR
Division of Emergencies and Critical Care, Oslo University Hospital, Oslo, Norway
References
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Skaiaa SC, Brattebo G, Assmus J, Thomassen O. The impact of environmental factors in pre-hospital thermistor-based tympanic temperature measurement: a pilot field study. Scand J Trauma Resusc Emerg Med. 2015 Sep 24;23:72. doi: 10.1186/s13049-015-0148-5.
Other Identifiers
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scs-2014
Identifier Type: -
Identifier Source: org_study_id
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