Fever increases the basal metabolic rate about —for each 1 Degree raise in bodv temperature

**Core Concept**
The basal metabolic rate (BMR) is the rate at which the body consumes energy when at rest. It is influenced by various factors, including body temperature, age, sex, and weight. Fever, which is an elevated body temperature above the normal range, can significantly impact the BMR.

**Why the Correct Answer is Right**
During fever, the body's metabolic rate increases to combat the infection or disease process. This increase in metabolic rate is due to the release of pyrogens, which stimulate the hypothalamus to raise the body's set point temperature. As a result, the body's cells and organs work harder to maintain homeostasis, leading to an increase in BMR. Studies have shown that for every 1°C (1.8°F) increase in body temperature, the BMR increases by approximately 7-10%.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is likely too low, as the increase in BMR is not directly proportional to the increase in body temperature.
* **Option B:** This option is too high, as the increase in BMR is not as dramatic as suggested.
* **Option C:** This option is incorrect, as it does not provide a specific percentage increase in BMR for each degree raise in body temperature.

**Clinical Pearl / High-Yield Fact**
It's essential to remember that fever is a natural response to infection or disease, and the increase in BMR is a compensatory mechanism to help the body fight off the pathogen. However, prolonged or extreme fevers can lead to complications such as dehydration, electrolyte imbalances, and even organ damage.

**Correct Answer: D. 7-10%**