Atrial fibrillation associated with only one kind of heart attack Refining the effects of a 2013 research, researchers have discovered that atrial fibrillation, or irregular heartbeat, is connected with only one kind of coronary attack – the more prevalent of both types. The scholarly study, led by Elsayed Z. Soliman, M .D., director of the Epidemiological Cardiology Analysis Middle at Wake Forest Baptist INFIRMARY, is released in the April 27 problem of the American Center Association journal Circulation. Atrial fibrillation, or a-fib, may be the most prevalent center rhythm disorder, influencing as much as 6 million Us citizens, and is definitely known to become a risk element for stroke.