Esophageal temperature during radiofrequency-catheter ablation of left atrium: a three-dimensional computer modeling study

Journal of Cardiovascular Electrophysiology
Fernando Hornero, Enrique J Berjano

Abstract

There is current interest in finding a way to minimize thermal injury in the esophagus during radiofrequency-catheter ablation of the left atrium. Despite the fact that the esophageal temperature is now being monitored during ablation, the influence of different anatomic and technical factors on the temperature rise remains unknown. We implemented a three-dimensional computational model that included atrial tissue, epicardial fat, esophagus, aorta, and lung, all linked by connective tissue. The finite-element method was used to calculate the esophageal temperature distribution during a procedure of constant-temperature ablation with an 8-mm electrode, under different tissue conditions. Results showed that the distance between electrode and esophagus was the most important anatomic factor in predicting the esophageal temperature rise, the composition of the different tissues being of lesser importance. The measurement of the esophageal temperature in different sites of the lumen offered differences up to 3.7 degrees C, especially for a short electrode-esophagus distance (5 mm). The difference in the convective cooling by circulating blood around electrode and endocardium did not show a significant influence on the esophageal tem...Continue Reading

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Citations

Nov 28, 2009·Journal of Interventional Cardiac Electrophysiology : an International Journal of Arrhythmias and Pacing·Marco GaleazziMassimo Santini
Dec 18, 2010·Journal of Interventional Cardiac Electrophysiology : an International Journal of Arrhythmias and Pacing·Khalil KanjwalJames D Maloney
Mar 20, 2010·The Open Biomedical Engineering Journal·Isaac A Chang
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May 14, 2014·Europace : European Pacing, Arrhythmias, and Cardiac Electrophysiology : Journal of the Working Groups on Cardiac Pacing, Arrhythmias, and Cardiac Cellular Electrophysiology of the European Society of Cardiology·Andrew R GavinAndrew D McGavigan
Nov 20, 2008·Journal of Cardiovascular Electrophysiology·Enrique J BerjanoJuan L Lequerica
Jan 28, 2009·Pacing and Clinical Electrophysiology : PACE·Tristram D Bahnson
Aug 11, 2015·IEEE Transactions on Bio-medical Engineering·A González-Suárez, E Berjano
Sep 23, 2014·International Journal of Hyperthermia : the Official Journal of European Society for Hyperthermic Oncology, North American Hyperthermia Group·Navid Manuchehrabadi, Liang Zhu
Jan 16, 2013·Heart Rhythm : the Official Journal of the Heart Rhythm Society·Patricia TungMark E Josephson
Oct 26, 2016·Heart Rhythm : the Official Journal of the Heart Rhythm Society·Carola GianniAndrea Natale
Nov 10, 2016·Journal of Cardiovascular Medicine·Matteo AnselminoFiorenzo Gaita
Aug 1, 2008·Circulation. Arrhythmia and Electrophysiology·Hiroshi NakagawaWarren M Jackman
Jun 2, 2017·World Journal of Gastroenterology : WJG·Nurit Katz-Agranov, Moises I Nevah Rubin
Apr 11, 2018·Arrhythmia & Electrophysiology Review·Jorge RomeroLuigi Di Biase

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