Which thermometer measures temperature from the ear?

Which thermometer measures temperature from the ear?

• A. Oral thermometer
• B. Rectal thermometer
• C. Tympanic thermometer
• D. Axillary thermometer

Answer: (C)

A tympanic thermometer measures temperature from the ear by using infrared sensing of the tympanic membrane through the ear canal. This location is close to the body's core temperature regulation, so it provides a quick estimate of core temperature. It's fast and noninvasive, making it common for both adults and children. For accurate readings, insert the probe toward the tympanic membrane with the ear properly straightened, and ensure the ear canal is clear of wax; avoid use if there’s ear pain, drainage, or recent ear surgery since readings can be affected. Other thermometer types measure from different sites—oral under the tongue, rectal in the rectum, and axillary under the arm—so they don’t read from the ear.

A tympanic thermometer measures temperature from the ear by using infrared sensing of the tympanic membrane through the ear canal. This location is close to the body's core temperature regulation, so it provides a quick estimate of core temperature. It's fast and noninvasive, making it common for both adults and children. For accurate readings, insert the probe toward the tympanic membrane with the ear properly straightened, and ensure the ear canal is clear of wax; avoid use if there’s ear pain, drainage, or recent ear surgery since readings can be affected. Other thermometer types measure from different sites—oral under the tongue, rectal in the rectum, and axillary under the arm—so they don’t read from the ear.