Answer:
A cardiac arrhythmia simply defined is a variation from the normal heart rate and/or rhythm that is not physiologically justified. Recent years have witnessed important advances in our understanding of the electrophysiologic mechanisms underlying the development of a variety of cardiac arrhythmias. The mechanisms responsible for cardiac arrhythmias are generally divided into 2 major categories enhanced or abnormal impulse formation and conduction disturbances.
Explanation:
I hpoe this helps. :)
