How long should the thermometer be left in place?
May 25, 2022
Source: Cainiu Health
Dr. Wang Mingxuan
Introduction
The mercury thermometer is currently the most commonly used type, with a recommended measurement duration of approximately 5–10 minutes. Electronic thermometers require about 1 minute for measurement, while tympanic (ear) thermometers need only a few seconds. For oral temperature measurement, the duration is typically around 3 minutes. Note that prior to oral measurement, the thermometer must first be disinfected and then placed under the tongue.
A thermometer, as its name suggests, is a device used to measure body temperature. Due to its convenience and speed, it is widely employed to determine whether a patient has a fever. However, measurement duration varies depending on the type of thermometer used. So, how long should a thermometer be left in place?
How Long Should a Thermometer Be Left in Place?
The most commonly used traditional thermometer is the mercury thermometer, which requires approximately 5–10 minutes for an accurate reading. Electronic thermometers typically require only about 1 minute, while infrared ear thermometers take just a few seconds.
Axillary (underarm) measurement is generally the simplest method for taking body temperature. Prior to measurement, ensure the thermometer reads below 35°C. Place the thermometer’s bulb at the apex of the axilla, ensuring firm, direct contact between the mercury tip and the skin, and hold the arm snugly against the body to prevent displacement or falling out. After 5–10 minutes, remove the thermometer, read the value, and wipe it clean with sanitary tissue. If the axilla is sweaty, dry it thoroughly before measurement. If the thermometer is removed prematurely or the arm is relaxed before completion, the measurement must be repeated. Additionally, avoid measuring immediately after consuming hot beverages, engaging in vigorous exercise, or experiencing emotional excitement. For oral temperature measurement, the recommended duration is approximately 3 minutes. Note that prior to oral use, the thermometer must first be disinfected and then placed under the tongue.
Depending on the patient’s specific condition, different types of thermometers may be selected for optimal accuracy and comfort. We hope this information proves helpful. Wishing you good health and happiness!
