A cardiac electrophysiology study is a minimally invasive procedure using catheters introduced through a vein or artery to record electrical activity from within the heart.

Why would a patient undergo an electrophysiology study?

An EP study can help determine the cause of heart rhythm problems (arrhythmias). Sometimes it's done to predict the risk of sudden cardiac death. An EP study is performed in a hospital by heart doctors (cardiologists) with special training in heart rhythm disorders (electrophysiologists).

How is electrophysiology test done?

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.