Characteristics of Ice Impedance Recorded From a Ring Electrode Placed at the Anterior Surface of the Cryoballoon: Novel Approach to Define Ice Formation and Pulmonary Vein Isolation [Original Articles]

Conclusions: Impedance rise of 500 at <90 seconds with freeze time of 90 seconds resulted in 100% PVI. Impedance measurements from the nose of the balloon is a direct measure of ice formation on the balloon. It provides real-time feedback on the quality of the ablation and defines the cryoapplication termination time based on ice formation, limiting ice expansion to extracardiac tissues.
Source: Circulation: Arrhythmia and Electrophysiology - Category: Cardiology Authors: Tags: Electrophysiology, Atrial Fibrillation Original Articles Source Type: research