Feasibility of a Noncontact Catheter for Endocardial Mapping of Human Ventricular Tachycardia

Abstract

This noncontact mapping system identified diastolic portions of the circuit in most VTs studied and can safely map and guide ablation of human VT.

Radiofrequency catheter ablation of frequent premature ventricular contractions using ARRAY multi-electrode balloon catheter

“…1), which allows simultaneous acquiring more than 3,000 virtual unipolar electrograms. Thus, mapping of arrhythmias with a single heartbeat can be performed [7,8]. There are limited data on outcomes in patients undergoing NCMS-guided RVOT ventricular arrhythmia ablation.…”

Radiofrequency Catheter Ablation of Ventricular Tachyarrhythmia Under Navigation Using EnSite Array

“…7 In short, EA (St Jude Medical) consists of a multielectrode array (MEA) catheter and a custom-designed amplifier system connected to a Silicon Graphics workstation used to run specially designed system software. The system simultaneously reconstructs more than 3300 virtual unipolar electrograms (VUE) and displays them in 3-D images of the chamber of interest in isochronal or isopotential mode.…”

Noncontact Mapping:

“…11,12 In brief, the system consists of a balloon mounted on a 9F catheter around which is woven a braid of 64 insulated wires that act as noncontact unipolar electrodes. The electrical activity detected by the electrode on the surface of this multielectrode array is generated by the potential field on the endocardium.…”