Blood pressure refers to the side pressure of the blood vessel wall acting in the unit area when the blood flows in the blood vessels. It is the driving force to promote the flow of blood in the vascular flow. Normal blood pressure is the prerequisite for blood circulation.Generally speaking, the normal blood pressure range is that the contraction pressure should be less than 130mmHg, and the diastolic pressure should be less than 85mmHg.So, what is the normal range of blood pressure?What are the use of blood pressure meters to pay attention to?
What is the normal range of blood pressure
Normal blood pressure or pre -hypertension: systolic blood pressure at 130 ~ 139mmHg and/or diastolic pressure at 85-89mmHg.
Hypertension: systolic blood pressure ≥140mmHg and (or) diastolic pressure ≥90mmHg.
Low blood pressure: systolic blood pressure ≤90mmHg and (or) diastolic pressure ≤60mmHg.
What are the types of blood pressure meters
1. mercury blood pressureometer
There are two types of mercury blood pressure meters: desktop and vertical type. The structure of desktal mercury blood pressure meters is reasonable, solid and reliable. The vertical blood pressure meter can be arbitrarily regulated height, which is most commonly used because of its reliable results.However, the latter is slightly larger and inconvenient to carry, and there are risk of mercury leakage.It measures the principle of blood pressure as auscultation method, mainly three parts: balloon, sleeve strap and detection meter.Among them, the two -sleeved rubber sac di can be connected to the balloon and the detection meter, and the three form a closed pipe system.
2. Electronic blood pressure meter
According to the measured site, it can be subdivided into upper arm type, wrist, fingers, manual, automatic type, etc.Its advantage is that the operation is simple and the readings are intuitive. As long as the switch needs to be turned on, it will automatically measure, suitable for family use.However, the electronic sphygmomanometer also has the disadvantages of large errors, and it is often based on standard mercury column blood pressure meters.The principle is the auscultation method (also known as the Kes voice method) or the display method (also known as the oscillating method. It is mainly used by gas pressure sensors, pressure micro -air pumps, electronic control exhaust valves, related software, mechanical slow exhaust valves andThe thread tube fast exhaust valve is composed.
3. Blood pressure meter blood pressure meter
Clinically, it is also known as a hydraulic sphygmomanometer and spring sphygmomanometer.Use the pressure pump operation to measure the pressure, the volume is small, and it is easy to carry, but as the number of applications increases, the accuracy of the result will affect the results of the springs.Use very little.
Precautions for the use of blood pressure meters
1. The blood pressure meter should be tested and proofed regularly to maintain accuracy.
2. For those who need to closely observe blood pressure, they should achieve "four fixed", that is, the time, part, positioning, and fixed blood pressure meter should be achieved.
3. There is no severe exercise, smoking, and emotional changes in the 30 min who affect blood pressure in the first 30 min. Emotions are stable and the cuffs should not be too tight.
4. Select the right sleeve band as required.
5, inflatable should not be too fast, too fierce to prevent mercury overflow; not to be too fast or too slow, so as not to cause errors in reading value.
6. If blood pressure cannot be heard or abnormal, you should re -test.At the time of re -test, the silver column will be measured before the "0" point.
7. Patients with hemiplegia are measured on the healthy side arm.

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