Embarrassment of medical equipment

Household electronic sphygmomanometer is a standing tool for many patients with hypertension. However, patients with hypertension often find that their blood pressure values are different from those measured by medical staff, and sometimes even very different. Recently, it was revealed on the Internet that Omron sphygmomanometer was not allowed to measure blood pressure, and many netizens talked about it. We don't comment on whether this brand product is qualified or not, but when our clinicians come into contact with patients with hypertension, they find that many patients lack understanding of electronic sphygmomanometer and there are misunderstandings in its use. Many patients were misled when purchasing and bought an electronic sphygmomanometer that was not suitable for them.

First of all, the oscillometric sphygmomanometer has been wrongly called "electronic sphygmomanometer" in the medical device industry. In fact, electronic sphygmomanometer refers to a sphygmomanometer that uses modern ic components, has built-in programs and needs power. Since its invention, it can be roughly divided into oscillometric sphygmomanometer and pulse wave sphygmomanometer. Among them, the former is an outdated product that many manufacturers are still producing and selling.

Compared with mercury sphygmomanometer, electronic sphygmomanometer is much more convenient to use. Take oscillometric sphygmomanometer as an example. There are many restrictions on oscillometric sphygmomanometer, even professional doctors sometimes can't accurately grasp it, and ordinary citizens who lack professional knowledge can't use it well. Although mercury sphygmomanometer is troublesome to use, its result is undoubtedly more accurate than oscillometric sphygmomanometer, which is one of the reasons why mercury sphygmomanometer is widely used in most hospitals.

Oscillographic sphygmomanometer is simple to make and inaccurate in calculation method, and many manufacturers have produced it. However, different types and brands of oscillometric sphygmomanometers have their own applicable population and blood pressure measurement range, and it is accurate to measure blood pressure within the range. Beyond this range, blood pressure measurement will be inaccurate or may not be measurable. There are also some cuff of oscillometric sphygmomanometer, which also limits the application scope. If the user's arm circumference is greater than or less than the applicable range of the cuff, the blood pressure measurement value may be inaccurate. In addition, due to the measuring principle of oscillometric sphygmomanometer, some people with weak pulse and high or low blood pressure can't use it. In other words, oscillometric sphygmomanometer is not suitable for everyone. The terrible thing is that we can't know whether we can belong to the "applicable crowd" of oscillometric sphygmomanometer before conducting scientific experiments. In other words, the oscillometric sphygmomanometer we bought at home is probably a toy that deceives us. "Omron sphygmomanometer is not allowed" is one of the best evidences that sphygmomanometers vary from person to person.

Different from oscillometric sphygmomanometer, pulse wave sphygmomanometer has used a very unique concept from the beginning, and found a new way within the framework of "non-invasive measurement", which links the pulse fluctuation characteristics of human body with blood pressure changes without modular "calculation", but uses the measured specific data to deduce and finally get the specific blood pressure value. At the same time, the pulse wave sphygmomanometer runs through the discontinuous blood pressure measurement, realizing the real-time reading of blood pressure change, and solving the embarrassment of mercury sphygmomanometer listening to blood pressure change instantly (referring to the sound made by Coriolis sound, that is, the sound heard by doctors when measuring systolic and diastolic blood pressure).

When users choose home electronic sphygmomanometer, they should first distinguish oscillometric sphygmomanometer from pulse wave sphygmomanometer. In particular, most of the electronic sphygmomanometers on the market are oscillometric sphygmomanometers, so we must be careful when choosing them. It is suggested to give up the idea of being greedy for cheap, don't buy oscillometric sphygmomanometers (in fact, the prices of oscillometric sphygmomanometers produced by many so-called big factories are outrageous, which is completely profiteering), but buy pulse sphygmomanometers with accurate measurement. After all, health can't tolerate any falsehood, otherwise the consequences will be serious.