How many minutes should a thermometer be kept in the mouth for an oral temperature reading?
Aug 22, 2023
Source: Cainiu Health
Dr. Yang Shuwen
Introduction
Under normal circumstances, an oral thermometer should be left in place for 3 to 7 minutes. Measuring body temperature is not better when done for longer periods, as body temperature is stable; with the correct technique, 3 to 7 minutes is sufficient. If a fever is detected after measuring oral temperature, patients are advised to seek medical attention promptly to determine the underlying cause and receive appropriate treatment.
Under normal circumstances, an oral thermometer should be left in the mouth for 3 to 7 minutes. Measuring body temperature is not better the longer it takes, as body temperature stabilizes quickly; with proper technique, 3 to 7 minutes is sufficient. The details are as follows:
There are several methods for measuring body temperature, each requiring different durations. For axillary (underarm) measurement, the recommended time is 5 to 10 minutes, with a normal range of 36°C to 37°C. For rectal measurement, the duration is 3 to 5 minutes, with a normal range of 36.8°C to 37.8°C. For oral measurement, the duration is 3 to 7 minutes, with a normal range of 36°C to 37°C; children may have temperatures up to 0.5°C higher. Before taking an oral temperature, the thermometer must be thoroughly cleaned and disinfected to prevent the spread of infectious diseases.
Although oral measurement can accurately reflect body temperature, it is important to note that during measurement, the patient cannot breathe through the mouth. The thermometer probe must be placed under the tongue, and the mouth must remain tightly closed for the full duration to obtain an accurate reading. Additionally, oral temperature measurement is not recommended for children or patients with mental disorders, as thermometers contain mercury, which could pose health risks if accidentally broken or bitten.
If fever is detected after measuring oral temperature, patients are advised to seek prompt medical attention at a hospital to determine the underlying cause and receive appropriate treatment.
