If your heart’s aflutter, a poet may say the tremulous excitement you feel is because you are in love. Your doctor, however, will say your heart’s flutter could be a sign of a serious condition: atrial fibrillation.
According to the American Heart Association, atrial fibrillation (also called AFib or AF) is a quivering or irregular heartbeat (arrhythmia) that can lead to blood clots, stroke, heart failure and other heart-related complications.