5
Why measure in the ear?
The goal of thermometry is to measure core body temperature
2
, which is the
temperature of the vital organs. Ear temperatures accurately reect core body
temperature,
3
since the eardrum shares blood supply with the temperature control
center in the brain,
4
the hypothalamus. Therefore, changes in body temperature are
reected sooner in the ear than at other sites. Axillary temperatures measure skin
temperature and may not be a reliable indicator of core body temperature. Oral
temperatures are inuenced by drinking, eating and mouth breathing. Rectal
temperatures often lag behind changes in core body temperature and there is
a risk of cross-contamination.
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How to use your Braun ThermoScan
Remove the thermometer from the protective case.
1
Herzog L, Phillips S. Addressing Concerns About Fever. Clinical Pediatrics. 2011; 50(#5): 383-390.
2
Guyton A C, Textbook of Medical Physiology, W.B. Saunders, Philadelphia, 1996, p 919.
3
Guyton A C, Textbook of Medical Physiology, W.B. Saunders, Philadelphia, 1996, pp 754-5.
4
Netter H F, Atlas of Human Anatomy, Novartis Medical Education, East Hanover, NJ, 1997, pp 63, 95.
2
Push the Power button .
During an internal self-check, the display shows all segments.
Then the last temperature taken will be displayed for 5 seconds.
English
3
The lens lter indicator will blink to signal one is
needed.
To achieve accurate measurements, make sure a new,
clean lens lter is in place before each measurement.
Attach a new lens lter by pushing the thermometer
probe straight into the lens lter inside the box and
then pulling out.
Note: The Braun ThermoScan will not work unless a
lens lter is attached.
The thermometer is ready to take a temperature when
the display looks like the following image:
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