Which of the traditional mercury thermometer, underarm electronic thermometer and ear thermometer can reflect the body temperature more accurately?

Every doctor has his own diagnostic habit, which is accumulated through years of experience in seeing a doctor. For example, some doctors think that it is enough not to take medicine at 38℃, and some doctors think that medicine must be taken at 38℃. Whether to use a mercury thermometer or an ear thermometer is also a matter of personal diagnostic habits. Some doctors don't want to buy a new stethoscope, and some doctors use smart stethoscopes, so their personal habits are different. I can't say that instruments that doctors don't use are not good instruments. After all, doctors have different levels.

In strict accordance with the measurement requirements, the accuracy of the two is almost the same. If you really want to dig deep, the accuracy of mercury thermometer is slightly higher than that of ear thermometer, but the temperature reflected by the ground can be ignored, or the temperature error is less than 0. 1℃.

Generally speaking, the temperature error measured with the left ear and the right ear is 0.65438 0℃. When writing this article, I tried to test it. My left ear is 36.8℃ and my right ear is 36.9℃. Mercury thermometers also have errors, such as thin arms, weak clamps and low temperature. This is not an ordinary mistake.

An ear thermometer uses infrared light to measure the temperature on the eardrum. Its advantages are high measuring speed; The disadvantage is that the measurement position is difficult to find, the products on the market are uneven and the measurement accuracy is not high. 6-month-old baby's ear canal is small, so it is not suitable to use ear thermometer.

The forehead temperature measuring gun also has the advantage that it can measure the temperature within 1 sec, which is suitable for places with large human flow. Many children's hospitals basically use forehead temperature measuring gun. The disadvantage is that the temperature measurement accuracy is not high and it is easily affected by environmental temperature and humidity.

The advantage of electronic thermometer is that the measured temperature is more accurate; The disadvantage is that the measurement time is a little longer, but there are also products with short measurement time on the market now. The measuring time I used is only 8 seconds, which is relatively easy to operate.

Mercury thermometer is a traditional thermometer, and many doctors will use it to measure their temperature. Its advantages are relative stability, little external influence and more accurate temperature. The disadvantage is that the test time takes 5- 10 minutes, which is more difficult for hyperactive babies.