Manual Braun PRO 4000 (page 3 of 21) (English, French, Spanish)

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English

Braun ThermoScan

The Braun ThermoScan thermometer has been carefully developed for accurate,

safe and fast human body temperature measurements in the ear. The shape of

the thermometer probe prevents it from being inserted too far into the ear canal

which could perforate the tympanic membrane.

However, as with any thermometer, proper technique is critical to

obtaining accurate temperatures. Therefore, please read all

instructions carefully and thoroughly before using this product.

Important

• Do not expose the thermometer to temperature extremes (below –4 ºF / – 20 ºC

or over 122 ºF / 50 ºC) nor excessive humidity (> 95 % RH).

• The probe window must be kept clean, dry, and undamaged at all times to

ensure accurate measurements. To protect the probe window, always keep the

thermometer in the storage cover while transporting or when not in use.

• This thermometer must only be used with genuine Braun ThermoScan

probe covers.

• To avoid inaccurate measurements, always attach a new, clean probe cover for

each temperature measurement.

How does Braun ThermoScan work?

The Braun PRO 4000 technology reads the infrared energy emitted by the

tympanic membrane and surrounding tissues to determine the patient’s

temperature. To help ensure accurate temperature measurements, the sensor

itself is warmed to a temperature close to that of the human body. When the

Braun ThermoScan is placed in the ear, it continuously monitors the infrared

energy until a temperature equilibrium has been reached and an accurate

measurement can be taken. The thermometer displays a clinically accurate, oral

equivalent temperature that has been validated in clinical studies by comparing

IR measurements with the oral readings from afebrile and febrile patients of

various ages.

Why measure in the ear?

Clinical studies have shown that the ear is an excellent site for temperature

measurement because temperatures taken in the ear reect the body’s core

temperature

. Body temperature is regulated by the hypothalamus

, which

shares the same blood supply as the tympanic membrane

. Changes in core

body temperature are usually seen sooner at the tympanic membrane than at

other sites, such as the rectum, mouth or under the arm.

Advantages of taking temperatures at the ear versus traditional sites:

• Axillary temperature measurements reect skin temperature which may not

reliably indicate the internal body temperature.

• Rectal temperatures often lag signicantly behind internal body temperature

changes, especially at times of rapidly changing temperatures. Also, there is a

risk of cross contamination.

• Oral temperatures are often inuenced by eating, drinking, thermometer

placement, breathing through the mouth, or the inability of the person to

close their mouth completely.

1. Guyton A C, Textbook of medical physiology, W.B. Saunders, Philadelphia, 1996, p 919

2. Guyton A C, Textbook of medical physiology, W.B. Saunders, Philadelphia, 1996, pp 754-5

3. Netter H F, Atlas of Human Anatomy, Novartis Medical Education, East Hanover, NJ, 1997, pp 63, 95

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Braun PRO 4000 Manual

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