How long should a newborn's temperature be measured?

Oct 13, 2022 Source: Cainiu Health

Dr. Xie Zixing

Introduction

The time required to take a newborn's temperature depends on the measuring instrument used. If using a mercury thermometer, measurement usually takes 5 to 10 minutes to accurately reflect the true body temperature. With an electronic thermometer, the process may take only about 10 seconds. An infrared thermometer can measure temperature in just 1 second, although its accuracy is relatively lower; therefore, it is recommended to determine the temperature based on an average of three readings.

Generally, the time required for measuring a newborn's body temperature depends on the type of measuring instrument used. Commonly used instruments include mercury thermometers, digital thermometers, and infrared thermometers.

1. Mercury Thermometer

The mercury thermometer is a commonly used method for measuring a newborn's temperature. It is typically placed deep in the armpit for measurement, which usually takes 5 to 10 minutes, providing an accurate reflection of the newborn's true body temperature.

2. Digital Thermometer

When using a digital thermometer, such as an ear thermometer, the measurement time is relatively short—approximately 10 seconds. However, for accurate results, it must correctly detect the temperature of the eardrum.

3. Infrared Thermometer

An infrared thermometer measures body temperature using infrared technology. To take a measurement, point the device at the forehead from a distance of 3 to 5 cm and press the measurement button; the result is typically displayed within 1 second. However, this method is sensitive to external environmental factors, which may affect accuracy. Therefore, it is recommended to take three measurements and use the average value for the final reading.

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How many minutes does it generally take to measure body temperature with a thermometer?

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How to measure body temperature without a thermometer

Under normal circumstances, in the absence of a thermometer, measuring body temperature may not be sufficiently accurate. However, one can roughly assess temperature by touching and comparing warmth, observing breath temperature, noting physical symptoms, self-measuring pulse rate, and observing the color of the oral cavity. Please note, however, that none of these methods can provide precise temperature readings and should only be used as a basis for preliminary assessment.

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When during the day is it most accurate to take your temperature?

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Is it accurate to take body temperature under the blankets in winter?

Taking body temperature under the blankets during winter is generally not accurate. In winter, due to cold weather and low indoor temperatures, heat within the blankets does not dissipate easily, resulting in a higher temperature under the covers. If body temperature is measured under the blankets in winter, the reading may show an elevated temperature. However, if there are other physical discomforts, this measurement method is usually unreliable, prone to errors, and may affect the doctor's diagnosis and delay treatment.

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