
A hospital in Pittsburgh has become the latest medical center to join a ground-breaking Apple Watch trial in the US that's helping patients with atrial fibrillation ditch blood-thinning medication.
The REACT-AF trial began in July 2023 and is led by researchers at Johns Hopkins Medicine. Randomized patients (half of the overall participants) wear an Apple Watch for 14 hours a day, paired with an iPhone pre-programmed to monitor irregular heart rhythms.