Arm blood pressure meter purchase skills
2. Alternative measurement
This is a simple way to judge whether the blood pressure meter is accurate. The specific method is as follows: the first measurement of blood pressure with mercury blood pressure meter, after 3 minutes of rest, use the electronic blood pressure meterto measure the second time, then rest for 3 minutes, and finally measure the third time with mercury blood pressure meter. Take the average of the first and third measurements. Compared with the second measurement with an electronic blood pressure meter, the difference should generally be less than 5 mmHg. An blood pressure meter meter that meets this requirement can be used with confidence。
3. Visual inspection
The blood pressure meter is listed as a measuring instrument managed by law in our country. The electronic blood pressure meter produced by the manufacturer should be provided with a sign on an obvious location, and the content should include the name, model, upper limit of measurement, name of the manufacturer, and date of delivery. The standard document number and type approval document number should also be indicated
4. Accuracy check
The error of a blood pressure mete generally ranges from 2 to 3 mmHg. When purchasing an electronic blood pressure monitor, you may wish to operate it according to the instructions and measure your own blood pressure. You can repeat the measurement several times to see if its repeatability is good, and compare it with the value measured by a mercury blood pressure mete. In addition, when performing blood pressure measurement, check whether the displayed number is missing.