Taking a Newborn’s Temperature
Newborn fever is an important health indicator any temperature 100.4 or higher needs to be discussed with your baby’s doctor right away. A newborn’s immune system is immature and therefore even a low fever of 100.4 can indicate a serious infection. It’s important to know how to properly take your baby’s temperature.
The American Academy of Pediatrics (AAP) urges parents to completely avoid mercury thermometers because of the risk of poisoning if the thermometer breaks. Instead, choose a digital thermometer. There are several types of digital thermometers:
Oral (not recommended for newborns)
Armpit and rectal digital
Tympanic, or ear thermometers
Temporal lobe thermometer, which is placed near baby’s temple
Until your baby is six months old, rectal temperature taking is the most accurate. To correctly take a rectal temperature, follow these steps:
Try to calm your baby by soothing and rocking. It can be hard to get an accurate reading from a kicking and wiggling baby.
Position your baby belly down, either on your lap or on a firm surface.
Use a lubricant like Vaseline and gently slide the thermometer into baby’s anus about one inch. Distracting baby might help in staying still. A rectal thermometer should never be forced or cause any signs of pain.
Wait until the thermometer beeps before removing it.
At six months of age, the ear method may be used, but this can be a difficult method to get an accurate reading. Ear thermometers tend to be more expensive and require accurate placement to get a good reading. Carefully follow the manufacturer’s guidelines. If in doubt, take a rectal temperature.
Reviewed by Dr. Sara Connolly, December 2018
Sources:
- American Academy of Pediatrics
- How to Take a Child’s Temperature.
Jane M - Gould
- Fever in the Infant and Toddler.
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