The sphygmomanometer commonly used in our family is generally an electronic sphygmomanometer, but many people think that the electronic sphygmomanometer is inaccurate, so they choose to use a mercury sphygmomanometer. In fact, there will be errors in the measurement results of either an electronic sphygmomanometer or a mercury sphygmomanometer. As long as the operation is correct, the measurement error can be controlled. So what is the error of the electronic sphygmomanometer?
If it is used correctly, the general error will not exceed ±4mmhg. The mercury sphygmomanometer also has errors. Generally, the error is about ±3-5mmhg under the condition of professional correct measurement in hospitals. This is also under the condition of doctors operating measurements. If you use it at home, there may be operational problems. Greater error.
Therefore, when using an electronic sphygmomanometer, it is necessary to pay attention to the correct method of use to avoid possible causes of error. The reasons that easily lead to measurement errors are:
1. Avoid measuring under sports or emotional instability;
2. The time interval of each measurement should be controlled at more than 3 minutes;
3. The tightness of the cuff winding should be appropriate when measuring.
Therefore, for the use of electronic sphygmomanometers, we must make reasonable use of them to reduce the error of using electronic sphygmomanometers.