Skip to Main Content

We have a new app!

Take the Access library with you wherever you go—easy access to books, videos, images, podcasts, personalized features, and more.

Download the Access App here: iOS and Android


Electrophysiology studies (EPS) are minimally invasive procedures utilized for the diagnosis and treatment of cardiac arrhythmias. They can provide insight into the mechanism underlying a variety of cardiac rhythm disorders when noninvasive testing has been unrevealing. Abnormal findings often require device therapy or catheter ablation, which is often performed concomitantly with EPS.


Indications for Electrophysiology Studies

EPS is recommended when noninvasive investigations do not establish the diagnosis or etiology of arrhythmia and the result will change the clinical management. It is indicated for the evaluation of documented or suspected bradyarrhythmias and tachyarrhythmias, syncope, and for risk stratification of individuals at risk for sudden cardiac death (SCD).1,2 Indications are summarized in Table 82–1. EPS should not be performed in patients who have unstable angina, systemic infection, deep venous thrombosis in the region of venous access, or any other medical condition where the risks of the procedure outweigh the benefits derived from testing.

TABLE 82–1.Indications for Diagnostic Electrophysiology Studies


EPS involves placing catheters equipped with electrodes at the tip in ...

Pop-up div Successfully Displayed

This div only appears when the trigger link is hovered over. Otherwise it is hidden from view.