How does rectal body temperature compare to oral body temperature?

Rectal body temperature is typically considered to be about 1 degree Fahrenheit higher than oral body temperature. This difference arises from the location where each measurement is taken. The rectum maintains a more constant and slightly elevated temperature compared to the mouth due to its position in the body, which is less affected by external environmental factors, such as air temperature or recent food and drink consumption.

In clinical practice, rectal temperature is often used as a more accurate indicator of core body temperature, particularly in infants and during critical care scenarios. This is important for healthcare providers to understand, as it helps in assessing fever and overall health status accurately. Therefore, understanding this difference is crucial for accurate temperature assessment.