If you join this study, you will use three devices: 1) a patch that checks your heart (ECG patch), 2) a smartwatch, and 3) a small device you hold to check your heart. You will wear the ECG patch and smartwatch for the whole study. You will use the handheld ECG device once a week and anytime you feel symptoms. At home, you will write down your symptoms in a diary when you feel signs of AF. You will also go to two in-person visits and have eight phone calls during the study. At the in-person visits, you will get a check-up, answer short surveys about your experience and health, and give a blood sample at one visit. You can earn up to $100 for going to the in-person visits, and up to $50 to help pay for travel costs for each visit. The devices used in this study are not experimental. We will perform several experimental analyses using the data gathered during the study to answer scientific questions related to atrial fibrillation.

Who can Participate

You can join this study if you are 18 or older, have a normal heartbeat at your first visit, and you are getting the recommended treatment to help prevent stroke, as confirmed by your doctor. You also need to have had at least one episode of AF at age 50 or older, or at least two episodes of AF between ages 18 and 49 before your first visit. You must have had an episode of AF within the past year, confirmed by the study doctor. You cannot join this study if you are in constant AF, or if your AF is caused by something that can be treated like thyroid problems, heart inflammation, alcohol use, infection, surgery, or a blood clot in the lungs. You also cannot join if you have a heart device called a defibrillator. People who had an ablation to treat AF and have not had AF again two or more months after the procedure, cannot join. You also cannot join if you have had heart surgery in the last 6 months. If you have serious heart failure now or were in the hospital for heart failure in the last 3 months, you cannot join. You cannot join if you had chest pain, heart attack, or very high blood pressure in the last 3 months, or heart procedure in last month. People who had a stroke, or serious brain or mental health problems in the past 6 months cannot join the study. If you have had problem with drinking too much alcohol in the last 2 years, you can’t join the study.

Study ID