But the technology also works differently in the watch and in compact oximetry (the one bought at the pharmacy). In the latter, the device observes with a light the color of the blood that reaches the tip of the finger, while the watch uses the same principle on the wrist.
The finger is more vascularized and is therefore more suitable for monitoring. However, because watch technology is effective, it also works well on the wrist.
Blood pressure
A recent feature in smartwatch technology promises to measure blood pressure with the help of the watch. It needs to be used with complementary equipment — which puts pressure on the arm. However, it does not replace the reading carried out by professional equipment.
The resource should only be used to evaluate routine standards and is not valid as a specific one-off measure. Furthermore, blood pressure needs to be measured by a person who has the skills to do so, because it is a delicate and very important point in medical diagnosis and treatment.
Stress and anxiety
In this case, the main parameter used by watches is heart rate, which evaluates variations or irregularities in the pattern; for example, very fast heartbeats without physical activity may indicate conditions related to anxiety or stress.
