Blood pressure measurement could stop relying on inflatable cuffs. A new line of research explores the use of radio signals integrated into wearables to obtain continuous and non-invasive readings. This method analyzes the reflections of the signals in the arteries to deduce their state.
How Radio Signals Work on the Wrist 📡
The system emits low-power radio signals toward the radial artery in the wrist. An algorithm processes how these signals reflect and change when interacting with arterial tissue. By interpreting these variations, information about the diameter and stiffness of the blood vessel can be inferred, parameters linked to blood pressure. The technology is in the development phase.
Goodbye to the Cuff That Strangles You at Midnight 😅
Imagine your watch wakes you not with a gentle vibration, but with a digital wrist squeeze because it has detected a stress spike while watching your series. At least this futuristic version doesn't sound like a giant Velcro ripping off at 3 AM. That said, we'll have to see if the algorithm distinguishes between a hypertensive crisis and the simple gesture of gripping the controller tightly for an intense game.