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Advantages of taking temperatures at the ear versus traditional
sites:
ø
Axillary
temperature readings only reflect skin temperature
which may not indicate the internal body temperature.
ø
Rectal
temperatures often lag significantly behind internal body
temperature changes, especially at times of rapidly changing
temperatures.
ø
Oral
temperatures are often influenced by eating, drinking,
thermometer placement, breathing through the mouth,
or the inability of the person to close their mouth completely.
Body temperature
Normal body temperature is a range. The following table
@
shows
that ranges of normal also vary by site. Therefore, readings from
different sites, even if taken at the same time, should not be directly
compared.
Also, a person’s normal temperature range tends to decrease with
age. The following table shows normal ThermoScan ranges by age.
Normal ThermoScan temperature ranges
”
The range of normal varies from person to person and can be
influenced by many factors such as time of day, level of activity,
medications and gender.
1. Chamberlain, J.M., Terndrup, T.E., New Light on Ear Thermometer Readings,
Contemporary Pediatrics,
March 1994.
2. Chamberlain, J.M., et al., Determination of Normal Ear Temperature with an Infrared
Emission Detection Thermometer,
Annals of Emergency Medicine,
January 1995.
Axillary: 34.7°C - 37.3°C 94.5°F - 99.1°F
Oral: 35.5°C - 37.5°C 95.9°F - 99.5°F
Rectal: 36.6°C - 38.0°C 97.9°F -100.4°F
ThermoScan
”
: 35.8°C - 38.0°C 96.4°F -100.4°F
0 - 2 years 36.4°C - 38.0°C 97.5°F - 100.4°F
3 - 10 years 36.1°C - 37.8°C 97.0°F - 100.0°F
11 - 65 years 35.9°C - 37.6°C 96.6°F - 99.7°F
> 65 years 35.8°C - 37.5°C 96.4°F - 99.5°F
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