量体温需要多长时间
Feb 10, 2020
Source: Cainiu Health
Dr. Zhang Min
Introduction
温度计可以测量不同部位的温度，在测量不同部位时，所需要的时间也是不一样的。在测量腋下温度时，用手臂将温度计夹在腋下，要量5到10分钟；口腔温度测量时，需要量3到5分钟。腋下正常体温为36到37℃，口腔正常体温为36.3到37.2℃。
A clinical thermometer is a maximum thermometer—also known as a “medical thermometer”—designed to record the highest temperature it has measured. Its working substance is mercury. When the mercury in the bulb is exposed to body heat, it undergoes slight expansion, causing a noticeable increase in the length of the mercury column within the capillary tube. Understanding how to properly use a clinical thermometer is essential. So, how long does it take to measure body temperature? Below is an overview.
How Long Does It Take to Measure Body Temperature?
Thermometers can measure temperature at different anatomical sites, and the required measurement duration varies depending on the site. For axillary (underarm) temperature measurement, hold the thermometer securely in the axilla using the arm; the recommended duration is 5–10 minutes. For oral temperature measurement, place the thermometer under the tongue and leave it in place for 3–5 minutes. Normal axillary temperature ranges from 36.0°C to 37.0°C, while normal oral temperature ranges from 36.3°C to 37.2°C.
Steps for Measuring Axillary Temperature
Step One
Hold the thermometer by the end opposite the mercury bulb and shake it vigorously downward to reset the mercury column to below 36°C.
Step Two
Place the mercury-containing end of the thermometer snugly in the axilla and maintain it there for 5–10 minutes.
Step Three
Remove the thermometer and orient the scale toward yourself to read the mercury column’s position against the calibrated markings.
Step Four
Read the temperature along the central ridge between the scale markings and numerals. Position the thermometer with the scale facing upward and the triangular edge oriented toward you. Locate the uppermost visible meniscus of the mercury column—the corresponding numeral indicates the measured temperature. An axillary temperature exceeding 37.2°C in adults is considered febrile. In infants and young children, an axillary temperature above 37.5°C indicates fever.
In summary, measuring axillary temperature requires holding the thermometer in the axilla for 5–10 minutes; oral temperature measurement takes 3–5 minutes. We hope this information is helpful to you.
