MedCity News has shared the story of Ken Robson, Apple Watch user who was able to correctly self-diagnose a heart ailment thanks to Apple Watch heart rate data:

When he got to the hospital, Robson told staff that he had been tracking his heart rate on the watch, and had two weeks of back data. “Going in with the data certainly reduced my stay by a couple of days,” he told MedCity News. It also assured that he could have the operation nearly immediately.

Because the hospital could check his Apple Watch data, Robson did not have to wear a heart monitor for a week before the medical team at Scripps Mercy could confirm the diagnosis of sick sinus syndrome.