Participants in the study recorded their smartwatch ECGs remotely. While they did this, sometimes they would upload the ECGs to their electronic health records automatically using an app created by Mayo Clinic Center for Digital Health in the United States.
Being able to diagnose oneself could possibly be lifesaving. People with a weak heart pump might not display any symptoms, but this version of heart disease does affect about 2% of the population and 9% of people over the age of 60 years old. When the heart does not pump enough oxygen-rich blood throughout the body, symptoms could occur, which include shortness of breath, swelling in the legs and shortness of breath.