Notice BRAUN IRT4520

« being inserted too far into the ear canal which can hurt the eardrum. However, as with any thermometer, proper technique is critical to obtaining accurate temperatures. Therefore, read the use instructions carefully and thoroughly. Important •The operating ambient temperature range for this thermometer is 50–104°F (10–40°C). •Do not expose the thermometer to temperature extremes (below –4°F / –20°C or over 122°F / 50°C) nor excessive humidity (> 95% RH). •This thermometer must only be used with genuine Braun ThermoScan Lens Filters. •To avoid inaccurate measurements always use this thermometer with a new, clean lens filter attached. •If the thermometer is accidentally used without a lens filter attached, clean the lens (see «Care and cleaning»). •Keep lens filters out of reach of children. •This thermometer is intended for household use only. •Use of this thermometer is not intended as a substitute for consultation with your physician. How does Braun ThermoScan work? Braun ThermoScan measures the infrared heat generated by the eardrum and surrounding tissues. To help to avoid inaccurate temperature measurements, the probe tip 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. The measurement is finished and the result displayed when the thermometer detects that an accurate temperature measurement has been taken. Why measure in the ear? The goal of thermometry is to measure core body temperature 1 which is the temperature of the vital organs. Ear temperatures accurately reflect core body temperature 2 , since the eardrum shares blood supply with the temperature control center in the brain 3 , the hypothalamus. Therefore, changes in body temperature are reflected sooner in the ear than at other sites. •Axillary temperatures measure skin temperature and therefore, may not be a reliable indicator of core body temperature. •Oral temperatures are influenced by drinking, eating and mouth breathing. •Rectal temperatures often lag behind changes in core body temperature and there is a risk of cross-contamination. 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, p 754-53.Netter H F, Atlas of Human Anatomy, Novartis Medical Education, East Hanover, NJ, 1997, pp 63, 95. English IRT4520/4020_NA_S4-42 Seite 4 Freitag, 18. August 2006 11:33 11 5 Body temperature Normal body temperature is a range. The following table shows that this normal range also varies by site. Therefore, measurements from different sites should not be directly compared. •A person’s normal temperature range tends to decrease with age. The following table shows normal ThermoScan ranges by age. The range of normal also varies from person to person and fluctuates throughout the day. It is therefore important to determine normal temperature ranges. This is easily done using Braun ThermoScan. Practice taking temperatures on yourself and healthy family members to determine the normal temperature range. Note: When consulting your physician, communicate that the ThermoScan temperature is a temperature measured in the ear and if possible, note the individual’s normal ThermoScan temperature range as additional reference... »