To determine the patient's actual temperature,the nurse is aware that:

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Despite environmental temperature extremes and physical activity,temperature-control mechanisms of human beings keep the body's core temperature,or temperature of deep tissues,relatively constant during sleep,exposure to cold,and strenuous exercise.However,surface temperature fluctuates,depending on blood flow to the skin and the amount of heat lost to the external environment.Time of day also affects body temperature with the lowest temperature at 6 AM and the highest body temperature at 4 PM in healthy people.The circadian rhythm alters body temperature about 0.5° C (0.9° F)throughout each day.An acceptable temperature range for adults depends on age,gender,range of physical activity,and state of health.

To Determine the Patient's Actual Temperature,the Nurse Is Aware That