COMBINED RADIOFREQUENCY AND HIGH VOLTAGE PULSE CATHETER ABLATION

摘要

A method for treating ventricular tachycardia comprises inserting an electrode catheter into the ventricule. The ventricular wall of the heart is contacted with an ablation electrode (20) at a site where an aberrant electrical pathway is located. Radiofrequency is delivered through the ablation electrode (20) to the tissue for a time sufficient to confirm the site of the aberrant electrical pathway and to preheat the tissue. Short high voltage electrical pulses are then delivered to the tissue through the same electrode (20) to thereby form a non-conductive lesion.