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Evaluating the Electrical Signals of the Heart

Cardiac arrhythmias typically result in altered electrical activation of the heart. It is this altered activation that assists physicians in diagnosing the origin of your arrhythmia. The propagation of the electrical impulse through the heart as seen by an EKG strip during normal sinus rhythm is classically depicted below.


Capturing the electrical signal, or “footprint”, of your clinical arrhythmia has very important diagnostic and treatment implications. A number of outpatient tests are available that allow your physician to study the normal and abnormal electrical behavior of the heart including:

Video 2. Technique for cryoablation for atrial fibrillation