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Electrophysiology Studies

Electrophysiology Studies (EPS)

Electrophysiology studies (EPS) are invasive tests, in which a small, thin tube (catheter) is inserted in a large blood vessel in the leg or arm and advanced to the heart. This gives the physician the capability of finding the site of an arrhythmia’s origin within the heart tissue, thus determining how to best treat it. Another procedure called an esophageal electrophysiologic study may be ordered where a soft, thin flexible plastic tube is inserted in the nostril and placed in the esophagus to provide a more precise ECG recording.