Electrophysiology (EP) studies are tests that record the electrical activity in the heart. These tests can determine if there are extra electrical signals from within the heart and where they are located.
During this kind of test, one or more very thin and flexible wires may be inserted into a vein in the arm, groin or neck and then threaded into the heart. Small electrodes are used to measure these signals. The wires transmit information about the electrical signals of the heart and record the activity onto a screen or onto paper for more detail.
Electrical currents can also be sent to the heart through these wires to alter or correct the pace of the heartbeats. This can help your cardiologist determine a specific type of rhythm abnormality and determine the best way to treat it.
This test is performed as an outpatient service at the hospital.