Electronic blood pressure measurement Blood pressure 100 and 150 Mercury blood pressure measurement is 90 and 140.

There are errors between electronic sphygmomanometer and mercury sphygmomanometer.

1, blood pressure measured by mercury sphygmomanometer is measured in hospital or clinic; Electronic sphygmomanometer measures blood pressure at home.

2. Mercury sphygmomanometer requires auscultation technology, which is difficult to master, and it is difficult for middle-aged and elderly people to see the values clearly, which is prone to errors. The Guide to Prevention and Treatment of Hypertension in China recommends the use of upper arm electronic sphygmomanometer certified by national standards.

3. Before measuring blood pressure, avoid eating, drinking, smoking, showering, exercising or emotional changes, empty the bladder, rest quietly for at least 5 minutes before measuring, and measure twice at the same time.

4. If the blood pressure is measured three times on the same day, if the upper pressure is higher than 140 and the lower pressure is higher than 90, hypertension can be diagnosed.