Which condition is essential for an accurate axillary temperature reading?

• A. Direct contact with the skin of the axilla
• B. Place the thermometer under clothing
• C. Keep the arm raised and rotated outward
• D. Place the thermometer in the mouth

Answer: (A)

Direct contact with the skin of the armpit is essential because axillary readings rely on heat transfer by conduction from the body to the thermometer. When the sensor sits directly on bare skin, it accurately mirrors the body's temperature. If the thermometer is covered by clothing, held away from the skin, or sits in a space between fabric and skin, insulation or air gaps distort the measurement and make it unreliable. To get a proper axillary reading, place the thermometer in the center of the dry armpit with the arm snug against the body and hold it until the device signals a stable reading. Placing it under clothing or in the mouth or lifting the arm away from the body would all disrupt contact and produce an inaccurate result.