Medically reviewed by Anisha Shah, MD Sudden cardiac arrest symptoms include sudden loss of consciousness, responsiveness, ...

Google has provided more detail on how its potentially life-saving "loss of pulse" detection feature works in the Pixel Watch ...

Pulse counting works by generating a narrow, fixed-width square wave pulse at a set point in the received FM signal’s waveform, usually at the zero-crossing point. Since the frequency of the ...

but the Food and Drug Administration has finally given Google the go-ahead to activate Loss of Pulse Detection. Numerous smartwatches can use health sensors to monitor for sudden health events.