No need to add it, just remember to take temperatures in different locations.
Oral temperature: ? Place the thermometer under the patient's tongue, shut up for about 3 minutes and take it out, the normal range is 36.3 ℃ to 37.2 ℃.
Rectal temperature : Measured by sterilizing the thermometer and coating it with lubricant, then inserting it into the anus and removing it after three minutes, its normal value is about 0.3 ℃ to 0.5 ℃ higher than the oral temperature.
Armpit temperature: Because of the measurement of convenient health, is currently the most commonly used temperature measurement method, its measurement method is the thermometer clamped in the armpit, five minutes after reading the value of the normal range of 36.1 ℃ ~ 37 ℃, than the oral temperature is about 0.2 ℃ ~ 0.4 ℃ lower.
Mercury thermometer, a kind of thermometer, made of glass, inside the mercury column with the body temperature rise. Mercury thermometers are widely used in the medical field and in ordinary homes, and are available in some pharmacies. Given the dangers of mercury in mercury thermometers, many countries have adopted bans on them, and as early as 1992, Sweden banned the sale of all mercury-containing medical devices. Mercury pollution has attracted worldwide attention, and a legally binding international convention on mercury pollution control is likely to be in place in June 2013 after several rounds of intergovernmental negotiations.
The first thermometer was invented by Galileo in the 16th century. But it wasn't until 300 years later that an easy-to-use, reliable thermometer was designed. Mercury is stored in a ball of mercury at the end. When the mercury is heated, it expands and rises up the very narrow glass tube. Therefore, a small change in body temperature causes a large rise in the mercury inside the glass tube. After taking the temperature, the thermometer had to be shaken vigorously to return the mercury to the mercury bulb.In 1714, Gabriel Warrenheit developed a mercury thermometer with a scale set at the freezing point of water and within the range of a person's body temperature. A Dutch doctor used it to take the temperature of febrile patients, but the thermometer was still too large and most doctors were not able to use it soon enough. 1868, Wendrich, a German professor, published a book entitled "Disease and Temperature", which documented changes in the temperature of 25,000 patients, and he used a thermometer twice the size of the Olberts' thermometer, which took 20 minutes at a time to record the temperature. Later, in 1867, Olbert designed a thermometer that could quickly and accurately measure body temperature and was only about 15 centimeters long. Unfortunately, Olbert's thermometer came out too late to help Carl Wendrich. around 1980, the talking thermometer was invented. Membrane liquid crystal thermometers appear green when the temperature is normal, yellow for low fevers and red for high fevers. In 1988, electronic respiratory pulse thermometers appeared, allowing telemetry.
It is reported that a mercury thermometer contains about 1 gram of mercury. After being broken, all of the leaked mercury evaporates, which can make the air mercury concentration in a room 15 square meters large and 3 meters high reach 22 .2 mg / cubic meter. China has set the maximum allowable concentration of mercury in indoor air at 0.01 mg/m3. It is generally accepted that a person can quickly become mercury-poisoned in an environment with a mercury concentration of 1.2-8.5 mg/m3. Mercury, as a heavy metal, is highly toxic. Feng Xinbin, deputy director of the State Key Laboratory of Environmental Geochemistry at the Institute of Geochemistry, Chinese Academy of Sciences, said that once mercury vapor is inhaled by a person, it will enter the organs and tissues of the human body through the blood circulation, and it can also pass through the blood-brain barrier, damaging a person's central nervous system. When mercury enters water bodies, it is transformed into methylmercury, which is especially harmful to developing fetuses and infants. Methylmercury is also enriched in animals and humans as it moves up the food chain, thus threatening human health worldwide.
Considering the dangers of mercury in mercury thermometers, many countries have banned them. As early as 1992, Sweden banned the sale of all medical devices containing mercury. Britain, France, Denmark and the Netherlands? have also banned their use and sale. The United States has banned the sale of mercury thermometers in 13 states and cities, including San Francisco, Boston and Michigan, since 2000. The European Commission has banned the sale of mercury thermometers since 2005 and their export since 2011, and in December 2008, the Argentine government announced that it would ban the production and import of mercury thermometers. The World Health Organization has also established a Global Mercury Elimination Program, with the goal of reducing demand for mercury-containing thermometers and sphygmomanometers by 70 percent globally by 2017. However, the use of mercury thermometers has not been banned in China. Mercury thermometers are widely used in the medical field and in ordinary households, and are available in some pharmacies. Data from the China Medical Devices Industry Association (CMDIA) show that in 2008, the national production of mercury thermometers consumed 109.25 tons of mercury, equivalent to the amount of mercury used in 21.85 billion standard mercury-containing energy-saving lamps. According to statistics, the domestic production of about 120 million mercury-containing thermometers per year, and China's annual mercury thermometer breakage as a waste disposal of more than 10 tons of mercury.