RESUMEN
The purpose of an electrophysiological study is to verify the mechanism of arrhythmias and to decide the means of therapy for the clinical arrhythmia (pharmacological, radiofrequency catheter ablation, pacemaker-, ICD-implantation). The electrode catheters are introduced percutaneously into the right atrium, to the His-bundle, into the coronary sinus and/or into the right ventricle. By this electrode catheters the intracardiac electrograms are registered and programmed stimulation of the heart is performed. The electrical conduction properties are analysed. With stimulation manoeuvres most of the clinical tachycardias can be induced. In the first part of this overview we describe the procedure of an electrophysiological study, in the second part the indications are discussed.
