Final answer:
When teaching parents to take an infant's temperature, the recommended method for infants under 3 months old is rectal temperature measurement. For infants over 3 months old, axillary temperature measurement is commonly used. Oral temperature measurement can be used for older infants.
Step-by-step explanation:
When teaching parents to take an infant's temperature, it is important to demonstrate the correct methods. The recommended method for infants under 3 months old is rectal temperature measurement. This involves gently inserting a lubricated thermometer into the infant's rectum.
For infants over 3 months old, axillary temperature measurement is commonly used. This involves placing a thermometer under the infant's armpit and holding their arm close to their body for several minutes.
Oral temperature measurement can be used for older infants who can safely hold a thermometer under their tongue. Tympanic temperature measurement, which uses an infrared thermometer to scan the ear canal, is also an option, but it may be less accurate in infants.