What is an EPS?
Electrophysiology (EPS) studies use cardiac catheterization techniques to study patients who have irregular heartbeats (called arrhythmias). EPS shows how the heart reacts to controlled electrical signals. These signals can help doctors find out where in the heart the arrhythmia starts and what medicines will work to stop it. EPS can also help doctors know what other catheter techniques could be used to stop the arrhythmia. EPS uses electrical signals to help doctors find out what kind of arrhythmia you have and what can be done to prevent or control it. Doctors will perform a cardiac catheterization procedure in which a long, thin tube (called a catheter) will be put into an artery in your leg and threaded into your heart. This catheter can be used to send the electrical signals into your heart. Stimulating the heart will cause an arrhythmia, and doctors can record where in the heart it started. In some cases, you might be given a medicine to cause an arrhythmia. Certain medicines can
