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Hospital
Tests &
Procedures Electrophysiological Studies (EPS) Patients with serious disturbances of the heart’s electrical system often require specialized testing, called EPS. This test is done to determine the mechanism of certain arrhythmias and to assess the risk of potentially fatal heart rhythms and sudden death. This procedure is done under local anesthetic, similar to a cardiac catheterization procedure. Small electrical cables are passed through the veins of the legs or arms, placed in specific positions of the heart under X-ray guidance. Electrical measurements are then made to diagnose the problem and decide the best treatment available. The test measures the electrical stability of the heart and tendency to develop potentially dangerous rhythms, all under controlled circumstances. Sometimes a short version of the test is repeated once on medications to prove that they are working as intended.
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