The ECHAS One Study will be conducted in 200 patients who have already called for emergency care for a heart or stroke, and have been evaluated. The endpoint of the study will be a decision if the initial call was an appropriate call for emergency care. The sensitivity of the app for detecting appropriate calls will be assessed.
ECHAS One will test the use of a smartphone app to assist patients to decide if it is necessary to call for emergency care with symptoms that could represent a heart attack or stroke.