Cardiology

Atrial Fibrillation

Atrial fibrillation (AF or A-fib) is an abnormal cardiac rhythm characterized by rapid and irregular beating of the atria. Often it starts as brief periods of abnormal beating which become longer and possibly constant over time. Often episodes haven't any symptoms. Occasionally there could also be heart palpitations, fainting, lightheadedness, shortness of breath, or pain. The disease is related to an increased risk of coronary failure, dementia, and stroke. It’s a kind of supraventricular tachycardia.

Electrical conduction system of the heart