What is electrophysiologic testing?

Through early detection and treatment, severe arrhythmias can be diagnosed and treated, with the goal of relieving symptoms and preventing the common causes of sudden cardiac death. Electrophysiologic diagnostic testing can locate arrhythmias. These electrophysiologic studies can be used to determine the part of the heart that is causing the abnormal rhythm, and which treatments work best to return that rhythm to normal. The test involves placing temporary electrode catheters into blood vessels, typically in the groin, then guiding them into the heart. The electrodes are used to evaluate the electrical system of the heart. The electrodes can also be used to deliver small electrical impulses to the heart, which may trigger an arrhythmia, enabling your physician to evaluate the heart's conduction system under controlled conditions. Such studies help physicians to determine where the arrhythmias originate and provide an important guide for establishing the best course of treatment.

Electrophysiologic tests are done to find out why your heart is not beating in a regular way. These tests study the electrical flow in your heart.

The results can help your doctor find where an arrhythmia (abnormal heartbeat) is coming from and decide whether you need medicine, a pacemaker, an implantable cardioverter defibrillator (ICD), cardiac ablation, or surgery. If you’re on medicine, the test will show if it is working to prevent abnormal heartbeat.