Atrial fibrillation, commonly known as a.fib, is a disorder that affects the normal heart rate. With this abnormal heart rate or an arrhythmia, the heart tends to beat either too fast also called as tachycardia or too slow, also called as bradycardia or irregularly. These disorders in turn affect the amount of blood pumped by the heart.

What is Cardiac Electrophysiology ? Electro- is a prefix which means “electricity.” Physiology means study of the activities of any of the organism’s parts. Thus, cardiac electrophysiology cardiac EP is the study of electricity of the heart, it specifically deals with electrical impulses in the heart.