With the development of society and the improvement of living standards，Many people are not good。So now I care about my body.，For example, measuring blood pressure electronic blood pressure gauge is easy to operate，However, the information is incorrect is quite complex by unparalleled but using mercury blood pressure gauges.，But the value is more accurate，in general， More and more people choose mercury blood pressure gauges to measure blood pressure。How to use mercury sphygmomanometer？The following editor introduces how to use a mercury blood pressure gauge。
Principle of mercury sphygmometer
HG（HG）It is a single metal existing in liquid form at room temperature and pressure.。Mellow point-38。87°C，Boiling point356。6°C，density13。59Gram/Cubic centimeter。Powerful cohesiveness is stable in air，The higher the volatile temperature，Fast evaporation，Evaporation rate increase1。2-1。5Secondary，Evaporate more during air flow。Mercury is insoluble in water，It can evaporate into the air via the water seal layer on the surface。
How to use mercury sphygmomanometer
1。 In the first half of the blood pressure of the person being measured，Forbidden drink or coffee，Prohibiting consumption of exciting food。If you just exercise，Same in a quiet environment, take a rest for at least ten minutes，Calm mood relax，otherwise，Activity or tension will result in higher measurement。
2。 After opening the blood pressure gauge，Adjustive switch，To see if the mercury is“ 0”Scale，if not，Should be calibrated， Measurement will be affected。
3。 Close the balloon switch，Press cuff with one hand，Use another hand to press the balloon，Enter the cuff，To see if the mercury will rise，Or no mercury interrupt phenomenon。If it does not rise or have cracks，This means that the blood pressure gauge is leaking，Or decline in mercury content，This sphygmomanometer can no longer be used for measurement。
4。 Hot rolled cuff，Half of the upper arm bare，The sleeve is best。When it is cold, it will not affect the warmth of the warmth of the measuring arm.，To avoid high blood pressure due to excessive clothes。
5， The subject can sit down or supine when measuring blood pressure，The straightening of the upper limbs should be in the same level with the heart.，And slightly stretch。
6。 After exhaling the cuff in the cuff in the squeezing cuff，Align the intermediate portion of the cuff balloon with the rubber tube at the elbow socket，Put the sleeve around the upper arm。The lower end of the cuff is above the elbow joint2-3 cm，Tightening should be able to make your fingers into it。
7。 The chest of the stethoscope during measurement is， Headphones should be placed in the elbow socket，Don't give it into the cuffs for convenience，This will make the measured blood pressure than the actual value.。
8。 Stethoscope，Turn off balloon switch，Pump，Until the hurup sound disappears，Then I will be filled once to continue the mercury20?易彤破壁料理机售后30mmHg； Keep two eyes agree with mercury column，Open balloon switch，In one second4mmHgEmpty speed evenly slowly，Not too fast。
9。 During the decline in Hg，I heard the first clear tapping sound，Is the systolic pressure of the subject； Will always hear the sound of the beating，When the sound of the beating suddenly becomes very weak or can't hear，The indication is a diastolic pressure.。
10。 If blood pressure is too high during the measurement, the shipper is unclear.，Gas in the cuffs should be discharged first，The mercury column will fall again to“ 0”，Wait for a while to carry out the second measurement。Usually no continuous measurement of more than twice，Quasi-the least results obtained from the measurement。
11。 Remove the sleeve after measurement，Extrusion air，Close the balloon switch，Folding and put in the box。Don't forget to tilt your blood pressure to right45°，Completely flowing back to the water tank，Then close the switch of the mercury box，Gover。If you do not return mercury，The next time use will cause a cracked water，The evaporation of mercury will also become very fast。Now some mercury sphygmomanometers have a clear description，You don't need to rearrange，Depending on the manufacturer's product description。
Precautions for using mercury blood pressure gauges
1，Take lightly when taking。Don't beat the blood pressure gauge，Prevent blood pressure gauges from damage，Leakage of mercury。
2，Rubber hose must be straightened，Prevention， Entangle and many more，Keep a smooth respiratory tract。
3。After opening the mercury pot, make sure that the mercury content reaches the zero line.，if not，Please be sure to send it to repair。Because of the fact that mercury will not only cause incorrect measurement results，It is also easy to cause mercury stratification，Even splash。
4。When the mercury content rises to a higher position，Make sure to slow down，In order to prevent liquid levels from shaking for some reasons，Mercury splashes。
5，If you feel cheer，Level stops，It is necessary to stop the refueling check whether the wind path is smooth。
6，in general，No need to increase mercury to the highest level，Just satisfying clinical needs。
7After use，Remember to tilt the right at least45°，Waiting for mercury to return to the jug，Close up of mercury pot switch。
