High School

How do you calculate a BMR change with a change in temperature? Mark has a BMR of 2,200 calories. He is not feeling well, so he checked his temperature. Mark has a fever of 99.6ºF. What would his BMR be now?

Answer :

Final answer:

Basal Metabolic Rate or BMR is the number of calories needed for basic functions and it increases notably during fever. The calculation reveals that Mark's BMR during his fever would be around 2,354 calories.

Explanation:

The Basal Metabolic Rate or BMR is the number of calories a person's body needs to perform basic functions. For every degree of temperature rise in fever, the BMR increases by about 7%. However, this estimated rate can be different for everyone. To calculate how the BMR of Mark changes due to his fever, we would first determine the degrees of difference from a normal body temperature, which is typically around 98.6ºF. Mark's temperature is 99.6ºF, hence, there is a 1-degree difference. Since BMR increases by about 7% per degree, we would calculate the 7% of 2,200 calories (which is Mark's BMR). Doing this calculation, we get 154 calories. Thus, Mark's BMR during his fever would approximately be 2,200 + 154 = 2,354 calories.

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