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Exams and Tests

Evaluation of rhythm disorders requires a discussion of symptoms and a physical exam with a health care provider.

In addition, an electrocardiogram (ECG) is mandatory to establish the exact type of arrhythmia. If the rhythm disturbance is present while the ECG is being recorded, the problem can be identified immediately. Otherwise, more specialized testing may be required. A 24-hour (or longer) recording of the heartbeat is often necessary to detect any rhythm problem that occurs daily but not constantly.

However, if the arrhythmia is even more infrequent, an event recorder may be used. These vary from hand-held machines that are activated by the patient whenever he or she feels symptoms, to some that are placed surgically under the skin and left there for up to 1 year.

An ultrasound of the heart, called an echocardiogram, is often used for an evaluation of the structure and function of the heart. In more serious cases, a test using electrodes placed inside the heart, called an electrophysiologic study (EPS), may be recommended to determine further management.