Atrial fibrillation, commonly known as AFib, is an arrhythmia of the heart — an abnormal rhythm where the heart beats too quickly, too slowly or irregularly.
Dr. Jonathan Nieves, a cardiologist with Broward Health, said the condition specifically affects the heart’s upper chambers.
“In the case of AFib, the top chambers, known as the atrium, will be very chaotic and irregular,” Nieves said. “Sometimes that’s for brief moments, and times, maybe minutes, seconds. Other times, it’s permanent, and patients are in it all the time.”…