How long should the thermometer be kept under the axilla to obtain an accurate reading in a toddler?

How long should the thermometer be kept under the axilla to obtain an accurate reading in a toddler?

• A. 1 minute
• B. 3 minutes
• C. 5 minutes
• D. 10 minutes

Answer: (C)

Axillary readings are slower to reflect the body's true temperature because heat must transfer from the body's core through the tissues to the armpit, and the underarm is easily influenced by ambient temperature, moisture, and clothing. Waiting about five minutes gives the thermometer a chance to equilibrate with the body heat and reach a stable value, which makes the reading reliable in a toddler. Shorter times risk capturing skin or environment rather than core temperature, while longer times aren’t typically needed and can be uncomfortable.

Axillary readings are slower to reflect the body's true temperature because heat must transfer from the body's core through the tissues to the armpit, and the underarm is easily influenced by ambient temperature, moisture, and clothing. Waiting about five minutes gives the thermometer a chance to equilibrate with the body heat and reach a stable value, which makes the reading reliable in a toddler. Shorter times risk capturing skin or environment rather than core temperature, while longer times aren’t typically needed and can be uncomfortable.