Judging from the actual effect of measuring blood oxygen by smart watches at present, although the accuracy has been improved, there is still a certain gap to achieve medical-grade blood oxygen monitoring. The blood pressure measured and recorded by wearing a sports watch is for reference only.
Sports watches basically use photoelectric sensors to measure blood pressure, and photoelectric sensors can collect pulse waves at our wrists and exchange and analyze energy. By judging the intensity of peripheral artery pulse and combining with the basic blood pressure value, the change of blood pressure is calculated, which is a relative value, not an absolute measurement value, so it is inaccurate.
Matters needing attention in measuring blood oxygen with watch
1. Measurement of blood oxygen saturation Please start the blood oxygen measurement on the wearable device. In order to ensure the accuracy of measurement data, it is necessary to measure according to the wearing instructions.
2. Due to some external factors (such as low blood perfusion, long hair, tattoos, scars, drooping arms, arm jitter, wearing deviation, low temperature, etc.). ), the measurement results may be inaccurate or even impossible.
3. Watch products are not medical devices. Test data and results are for reference only and are not used for diagnosis and medical treatment.