Accuracy of medical equipment

Personally, I think that the accuracy of these smart watches in measuring ECG and blood pressure is not too high. In the field of smart wear, the significance of ECG measurement is mainly manifested in three aspects: prevention of running injury: exercise heart rate monitoring is used to monitor exercise intensity in real time, prevent exercise injury and improve exercise efficiency; Fatigue and stress tests are used to evaluate the physical state before exercise to prevent sports injuries caused by excessive exercise.

Prevention of sudden death: Before sudden death by exercise, the electrocardiogram of sudden death will change abnormally. If we can capture the abnormal changes of ECG and deal with them in time, it will be of great help to prevent sudden death during exercise. In the daily heart health management, users can use ECG watches as daily monitoring and abnormal tips, and then go to the hospital for detailed ECG monitoring and testing when ECG data is abnormal, which plays a role in prevention and confirmation.

Generally speaking, according to my personal experience, the heart rate data measured by ordinary smart bracelets can still be trusted, even if there are several errors per minute, it will not affect the judgment of the condition. There are relatively few products that use smart bracelets and smart watches to measure blood pressure, because the detection difficulty and cost will greatly increase.

Regardless of their measurement principle, I personally don't trust their measurement results. Because of work, we often use electronic sphygmomanometer. I found that even the special wrist electronic sphygmomanometer often measures some unreliable results because of too many interference factors. At the same time, we should also pay attention to the selection of formal products certified by relevant national institutions; Try to use cuff style, not wrist style; Check regularly according to the requirements in the manual.