Calibrating core temperature measurement devices during rehab is important to prevent misclassification of heat illness.

• A. False
• B. Not required if using standard thermometers
• C. Calibrating core temperature measurement devices helps prevent misclassification of heat illness.
• D. Only when testing in the field

Answer: (C)

Calibrating core temperature measurement devices during rehab ensures the readings truly reflect the body's temperature, which is essential because treatment decisions hinge on those numbers. In exertional heat illness, small drifts in a sensor can push a reading above or below the thresholds used to decide cooling needs, clearance to return to work, or escalation of care. Regular calibration corrects sensor drift, aging, or environmental effects, reducing misclassification between conditions like heat exhaustion and heat stroke and between "ready to re-evaluate" versus "needs continued cooling or rest. By following manufacturer guidance, checking accuracy before each session, and keeping records, rehab teams maintain reliable readings across devices and operators, supporting safe, consistent decisions. If a device cannot be calibrated within acceptable limits, it should be replaced or a validated method should be used instead.