Which of the following is an indicator that a firefighter should not be released back to duty after rehab without further evaluation?

• A. Normal vital signs.
• B. Resolved symptoms.
• C. Adequate hydration with stable vitals.
• D. Abnormal core temperature.

Answer: (D)

Core temperature is a pivotal measure of whether thermoregulation has fully recovered after strenuous work in heat. If the core temperature remains abnormal, it signals ongoing thermoregulatory stress or an underlying issue that could worsen if the firefighter returns to duty. Releasing someone with an abnormal core temperature risks a relapse of heat illness or other complications once they resume intense activity, so further evaluation and treatment are necessary before returning to work.

By contrast, normal vital signs, resolved symptoms, and adequate hydration with stable vitals all point to physiological recovery and lower risk of decompensation on the job.