For accurate temperature measurement, how long should a glass thermometer stay in the rectum?

For accurate temperature measurement using a glass thermometer rectally, it is crucial to allow sufficient time for the thermometer to stabilize and provide an accurate reading. The recommended duration for keeping the thermometer in place is typically around 2-3 minutes. This time frame ensures that the thermal equilibrium is reached, meaning that the thermometer has enough time to reflect the core body temperature accurately without being influenced by external factors or movement.

Using this specific duration facilitates a balance between efficiency and accuracy. A shorter duration may lead to an underestimation of the true body temperature, while a longer duration, beyond what is necessary, could cause discomfort to the patient without significantly improving accuracy. Therefore, the 2-3 minute range is ideal for obtaining a reliable reading while ensuring patient comfort.