In recent years, electronic blood pressure monitors have become more and more common in human use, and many people can measure their own blood pressure at home through a blood pressure monitor, always checking their own physical condition, and have a general understanding of the self. This is a great way for patients to protect their health, and allows them to take emergency measures for their own health at any time. But electronic blood pressure monitors have also found some problems in the measurement process, and recently, many patients have asked me for advice:
Seeing the problems described above, I believe that many doctors have heard of them, and I believe that many patients have such questions. There are many hypertensive patients at home in self-measurement, encountered such a situation will be at a loss. So is the electronic blood pressure monitor accurate or not? And can not come to measure it? Let's take a look
In the process of detecting high and low pressure, electronic sphygmomanometer has become one of the indispensable equipment for many blood pressure patients. In layman's terms, electronic blood pressure is low is the cuff tied to the person's arm, through the cuff in the catheter, through the soft tissue to the brachial artery a certain pressure, the formation of the air pressure, which is through the barometric pressure sensor to extract and put the aorta . In the process of this air pressure change, a geometric pattern is formed, and by calculating this geometric pattern to derive the average air pressure, the ratio method or inflection point method can be used to calculate the systolic and diastolic blood pressure.
When the cuff pressure is equal to the systolic pressure of the heart, the blood flow will form a vortex through the narrow tube, and at this time the sound of the blood flow can be heard is the high pressure; and by continuing to deflate the sound of the blood flow can not be heard is the low pressure .
As patients have reported before, blood pressure gets lower and lower during measurements, and the results of multiple tests are different.
1. The patient's physical mood varies
A lot of the reason that the patient's blood pressure gets lower and lower, as mentioned above, may be due to the patient's physical mood.
At the beginning of the measurement, most of the patients were nervous or too excited, resulting in increased blood pressure; and the second measurement, the mood is relatively stable, this time the blood pressure will be reduced. Therefore, it seems that the measurement of the electronic sphygmomanometer has a great influence on the patient's physical condition and emotional state. So here I also want to tell the patients, in the measurement of blood pressure, we must remain calm and relaxed, you can about ten minutes ahead of time to ease the tension of the mind, and then after the measurement.
2, the cuff is not tight
In the process of multiple measurements, if the cuff can not keep the same tightness, the results of our blood pressure will also have an impact. Generally speaking, we can leave a one-finger gap when tying the cuff. When the cuff is too tight, our blood pressure will increase, while when the cuff is too loose, our blood pressure will decrease. Whenever we tie the cuff, we need to make sure that the cuff is tight, and that it is placed in the middle of the upper arm, about 2 to 3 centimeters from the armpit, and that the height of the cuff is roughly the same as the height of the heart, in order to make the measurements as accurate as possible.
3, environmental magnetic field
In each measurement of blood pressure, we have to ensure that the surrounding environment is free of magnetic fields, but also regularly calibrate the electronic sphygmomanometer. The inside of the electronic blood pressure monitor is metal and will be subjected to magnetic field induction, the measured data will not be allowed. So we need to stay away from phone booths and places with magnetic fields.
Measuring blood pressure is the biggest taboo is whether the sphygmomanometer is accurate, after all, this is related to the safety of a life. Electronic sphygmomanometer and the previous mercury sphygmomanometer, they are **** the same thing, the same point is through the cuff to inflate, thus generating pressure, to determine the air pressure.
And their difference is that mercury sphygmomanometers have the potential for poisoning, and are more complex, most people will not use. The electronic sphygmomanometer is easy to operate and has no possibility of poisoning, it is calculated by the instrument to arrive at the systolic and diastolic blood pressure.
1. Keep your mood calm. Blood pressure can be measured accurately only in a relaxed state.
2. Tighten and loosen the cuff consistently. Keep the cuff at the same level for multiple measurements to ensure that the blood pressure measurement is as accurate as possible.
3. Stay away from magnetic fields. After all, magnetic fields can interfere with the accuracy of blood pressure, so we need to stay away from places with magnetic fields.
The above three methods need to be extremely careful when measuring with an electronic sphygmomanometer, in addition, there is a tip:
When measuring blood pressure, we can first use a mercury sphygmomanometer, the second time using an electronic sphygmomanometer third time in the use of a mercury sphygmomanometer, will be the first and the third mercury sphygmomanometer to take the average value
After the measurement, the blood pressure will be measured by a mercury sphygmomanometer. After averaging the first and third mercury sphygmomanometers , the difference in value between the second and second electronic sphygmomanometers does not exceed ten millimeters of mercury, the electronic sphygmomanometer is accurate.
For people with high blood pressure, self-measurement of blood pressure is essential, so the electronic sphygmomanometer is an important instrument for measuring blood pressure.
When we buy an electronic sphygmomanometer, be sure to choose an authentic brand or a relatively high visibility, buy in the formal channels, do not buy three products , and regularly calibrated, so that the value can be more accurate.
Through the description of the above knowledge, for the patient described the situation, we also have a new understanding and experience. So it's not that blood pressure is lower and lower, and it's not that electronic sphygmomanometers aren't allowed, it's that we need to learn how to use them , and use them correctly in order to have a clear understanding of ourselves, and to be able to be truly responsible for ourselves.
At the same time, here is a little advice for people with uneven blood pressure:
Maintain a good and healthy diet, maintain a relaxed and happy mood, more exercise, less smoking and drinking.
Doing these things will also help keep our blood pressure stable. I hope patients can also pay more attention to these points, to maintain good health, after all, the body is the money. So by learning from the above, do you understand?