Emergency Call for Heart Attack and Stroke (ECHAS) - ECHAS One Study

Assessment of a Prehospital Mobile App and Sensor Triage System to Detect Neurologic and Cardiac Emergencies: The ECHAS Assessment Study (ECHAS- One)

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.

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.

Inclusion Criteria:

• Presented to ED via emergency medical services (EMS) for "Stroke alert" symptoms, including:

Slurred speech Asymmetric weakness or numbness Balance problems Vision changes Headache

And/or "MI alert" symptoms including:

Chest discomfort Chest pressure or pain Palpitations Shortness of breath Lightheadedness or presyncope Syncope Age ≥ 18 years Able to provide informed consent

Exclusion Criteria:

• Non-English speaking
• Moderate or greater dementia
• Severe visual impairment
• Inability to use smartphone (for physical, cognitive, or other reasons)
• Unable to consent for study