An electrophysiology (EP) study is a test performed to assess your heart’s electrical system or activity and is used to diagnose abnormal heartbeats or arrhythmia.

The test is performed by inserting catheters and then wire electrodes, which measure electrical activity, through blood vessels that enter the heart.

The EP study is performed in the electrophysiology laboratory of the hospital, where you’ll be placed on an X-ray table. A camera and television screens, heart monitors and various instruments will be close by. Electrodes will be placed on the patient’s chest and back to connect to the monitoring equipment. A blood pressure cuff will be placed on the patients upper arm to monitor your blood pressure.