Basic electrophysiologic mechanisms for the development of arrhythmias. Clinical application.

The mechanisms responsible for the genesis of cardiac arrhythmias are frequently divided into categories of disorders of impulse formation, disorders of impulse propagation, or combinations of both. Classification of arrhythmias into these categories is based largely on the results of experimental studies, where the initiation and perpetuation of an arrhythmia can be studied in some detail in a relatively controlled environment.