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Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated. It looks like your browser does not have JavaScript enabled. Please turn on JavaScript and try again. Important Phone Numbers. Top of the page. Fever Temperatures: Accuracy and Comparison. When the body is trying to lose heat axillary temperature may be close to core temperature, but on cooler days the body may be aiming to conserve heat and surface temperature may be significantly lower than core temperature.
The exact magnitude of the difference depends on many factors such as environmental temperature, clothing or how much the axillas are exposed to external air flow. Since the difference between core and axillary temperature is variable we cannot simply measure axilla temperature and add a fixed amount to ascertain core temperature. Ian Dyer is lead nurse for quality; Paula Gardner is head of the nursing division of unplanned care, both at Walsall Manor Hospital. Oxford: Blackwell Publishing.
Sign in or Register a new account to join the discussion. You are here: Practice nurses. Thermometers are not always accurate so it is important to be watching for other signs that your child might be ill.
A fever with other symptoms may mean a more serious illness. Babies younger than 3 months of age must be seen by a health care provider when they have a fever. During the first 3 months of life, babies are not always able to fight infections, so they need to be seen sooner than older babies and children with fevers. Skip to main content. Last Updated:. August Download PDF:. A digital thermometer is best for taking temperatures by the armpit and mouth. Several factors influence the ability of NCITs to detect fever accurately, including: Relative humidity Significant perspiration Positioning on forehead Exposure to cold or hot weather before temperature measurement Follow the best practices and the manufacturer's instructions when using NCITs.
For babies 3 to 6 months, the parents should speak with their health care provider. You may see a blue line filling the extra space that is not taken by the silver line. The opposite end is color-coded. Green is for oral or axillary and red for rectal Picture 6. To be sure, check the package to know which thermometer you have. Mercury glass thermometer. Glass mercury thermometers also have a silver tip. A dark line runs along the numbers to show the temperature. The tip of an oral or axillary glass mercury thermometer is long and narrow.
The tip of a rectal glass mercury thermometer is short and round.
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