Abstract 12488: Analysis of the Usefulness of Esophageal Temperature Monitoring for the Prevention of Esophageal Injury After Catheter Ablation of Atrial Fibrillation: Its Relation to the Distance Between the Esophagus and Left Atrium

• Published in: Circulation (New York, N.Y.) N.Y.), 2018-11, Vol.138 (Suppl_1 Suppl 1), p.A12488-A12488
• Main Authors: Ito, Miwa, Yamabe, Hiroshige, Kanazawa, Hisanori, Kaneko, Shozo, Kanemaru, Yusuke, Kiyama, Takuya, Tsujita, Kenichi
• Format: Article
• Language: English
• ISSN: 0009-7322; 1524-4539

BackgroundIt has been demonstrated that the short distance between the esophagus and the posterior left atrium (LA) is closely associated with the occurrence of esophageal injury (EI) after catheter ablation of atrial fibrillation (AF). Meanwhile, it has not been fully elucidated whether esophageal temperature monitoring sufficiently prevent the EI.ObjectivesThe purpose of this study was to examine the usefulness of esophageal temperature monitoring for avoiding the EI. Further we analyzed the relation between the incidence of EI and the distance between the esophagus and the posterior LA measured on the contrast computed tomography (CT).MethodsAmong 400 patients (paroxysmal AF; 295 patients and persistent AF; 105 patients) who underwent catheter ablation of AF, upper gastrointestinal tract endoscopy was performed the next day after ablation to examine for EI. The incidence of EI was compared between 92 patients who used esophageal temperature probe (ETP) (ETP Group) and 308 patients who did not used ETP (Non-ETP Group) during ablation. The shortest distance between esophagus and posterior LA measured on contrast CT (SD-CT) was also compared between the ETP and Non-ETP Groups.ResultsEI was found in 29 patients (7.3%). The SD-CT in patients with EI was significantly lower than that in patients without EI (2.3±0.6 vs 4.1±0.8 mm, p