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You are here: Home / News / Product Encyclopedia / How to use different sphygmometers

How to use different sphygmometers

Views:0     Author:Site Editor     Publish Time: 2019-04-30      Origin:Site

How to use different sphygmometers

1. Electronic Sphygmometer 

1) Keep quiet indoors and room temperature at around 20 °C.
2) The subject should be mentally relaxed before measurement. It is best to have a rest for 20 to 30 minutes and empty the bladder. Do not drink alcohol, coffee and tea, in addition, stop smoking.
3) The subject may take the sitting position or the supine position, and the arm to be tested should be placed at the same level as the right atrium (the arm should be at the same level as the fourth costal cartilage when sitting, or at the midline level of armpit when lying), then outreach for about 45 degrees. Roll the sleeves up to the armpits or take off one of the sleeves for easy measurement.
4) Before measuring blood pressure, the gas in the sphygmometer cuff should be drained. The cuff should be evenly tied to the upper arm to avoid being too loose or too tight, so as to ensure the accuracy of the measurement. The iliac artery of the elbow fossa should be in the middle of the air bag (the majority of the electronic sphygmometers are marked with arrows on the cuff), and the lower edge of the cuff is 2 to 3 cm from the elbow.
5) Turn on the electronic sphygmometer and record the blood pressure measurement after it is completed.
6) After the first measurement is completed, the sphygmometer should be completely deflated. About 1 minute later, measure once again. The average value of the 2 times’ measurements is the obtained blood pressure value. In addition, if you want to determine whether you have high blood pressure, you’d better measure at different times. It is generally believed that blood pressure can be determined as hypertension after at least three different times’ measurement.
7) If you need to observe blood pressure changes every day, you should use the same sphygmometer in the same position to measure the blood pressure of the same arm at the same time, thus the measurements will be more reliable.

2. Mercury Blood Pressure Monitor

1) Before using, the zero position should be at 0.5 kPa (4mmHg) when not pressurized; after 2min without deflation, the mercury column should fall less than 0.5kPa within 1min after pressurization. Broken column and bubble are prohibited during pressurization, which will be more obvious at high pressure.
2) Firstly use the balloon to inflate and pressurize the cuff that is attached to the upper arm.
3) When the applied pressure is higher than the systolic pressure, slowly deflate the balloon. The deflation rate should be controlled according to the patient's pulsation rate in measurement. And for people who have slow heart rate, deflation should be as slow as possible.
4) At the time there is pulsating sound in the stethoscope, the pressure value indicated by the pressure gauge corresponds to the systolic pressure.
5) Continue to deflate slowly.
6) When the sound that accompanies the heartbeat suddenly weaker or disappearing in the stethoscope, the pressure value indicated by the pressure gauge is equivalent to the diastolic pressure.
7) Drain the gas after using. Then tilt the sphygmometer to the right 45 degrees, making the mercury flow into the mercury pot. And finally turn off the switch.


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