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Chapter-11 Non-Radiofrequency Sources of Ablation

BOOK TITLE: Practical Cardiac Electrophysiology

Author
1. Gunda Sampath
2. Atoui Moustapha
3. Lakkireddy Dhanunjaya
ISBN
9789386056795
DOI
10.5005/jp/books/13028_12
Edition
1/e
Publishing Year
2017
Pages
14
Author Affiliations
1. Virginia Commonwealth University, Richmond, VA, USA
2. University of Kansas Medical Center, Kansas City, KS, USA
3. Center for Excellence in AF and Complex Arrhythmias, University of Kansas Medical Center, Kansas City, KS, USA
Chapter keywords
Non-radiofrequency source, RFA, cryoenergy, visually guided laser ablation, microwave energy, thermal balloon catheter system, low intensity collimated ultrasound

Abstract

The main concern of this chapter presents the non-radiofrequency sources of ablation. Radiofrequency ablation (RFA) is delivered through a metallic electrode mounted at the tip of the ablation catheter. While it serves a great purpose in ablating an arrhythmia focus, it has its shortcomings when it comes to ablating wide areas of tissue and isolating larger anatomic structures like the pulmonary veins (PVs) for atrial fibrillation (AF). Similarly, RFA in critical anatomic locations that are very close to atrioventricular (AV) node could sometimes result in collateral damage causing AV nodal blocks. Cryoenergy, high intensity focused ultrasound, visually guided laser ablation, microwave energy, thermal balloon catheter system and low intensity collimated ultrasound are the various non-radiofrequency sources of ablation are discussed in this chapter. Seven well-colored figures are also provided in this chapter.

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