e. Electrocardiogram Uses. The EKG has a variety of uses; for example, abnormal cardiac rhythms and conduction patterns and following the course of recovery from a heart attack.

Some people carry a Holter monitor to monitor heart electrical activity. This machine can be carried around by the patient while he goes about his everyday routines. The Holter monitor is especially useful in detecting rhythm disorders in the conduction system. It is also useful in correlating rhythm disorders and symptoms and then following the effectiveness of drugs in dealing with these disorders.