Electrophysiological examinations

The electrophysiological examination (EPS) is a special cardiac catheter examination for the clarification of cardiac arrhythmias.


During an electrophysiological examination (EPS), catheters are placed at various points in the heart. This allows the electrical properties of the heart to be determined. Cardiac arrhythmias can be triggered, terminated and localized. The aim of an EPS is to identify and localize the patient’s arrhythmia so that it can be treated in the next step. In addition to medication, treatment options include ablation, i.e. sclerotherapy of the respective arrhythmia using heat (radio frequency) or cold energy (cryoablation).


  • Steffel J, Ruschitzka F. Superresponse to cardiac resynchronization therapy. Circulation. 2014 Jul 1;130(1):87-90

For patients

You can either register yourself or be referred by your primary care physician, specialist.

Tel. +41 44 255 15 15

For referrals

University Hospital Zurich
Universitäres Herzzentrum Zürich
Rämistrasse 100
8091 Zürich

Tel. +41 44 255 15 15
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