Abstract 11134: Esophagus Temperature Monitoring Predicts Gastric Hypoperistalsis After Catheter Ablation for Atrial Fibrillation

Background:Gastric hypoperistalsis (GH) is possible complication of catheter ablation (CA) for atrial fibrillation (AF). Usefulness of esophagus temperature monitoring to avoid esophageal injuries has been controversial, however, the relationship between GH and this system remains unclear. Here, we sought to elucidate the relationship between esophagus temperature and asymptomatic GH evaluated by gastrointestinal endoscopy.Methods:The study population consisted of 254 patients who were treated with CA for AF during November 2017 to October 2018. We excluded the patients who underwent cryoballoon ablation, lack of data of esophagus temperature. Temperature alarm was set at 40 degree Celsius, and patients without the esophagus temperature alarm were also excluded because of the lack of temperature data. Finally, 102 patients were enrolled in this study. Patients underwent gastrointestinal endoscopy the day after the index CA with at least 12 hours of fasting. GH was defined as a food stagnation in the stomach despite of an inanition. We evaluated clinical background and ablation procedure including esophagus temperature by dividing into GH group and non-GH group.Results:The median age was 66 (59 - 75) years old with 30% of females. The GH were observed in 25% of the patients performed CA in this study, which was significantly more frequent than the incidence of GH in general populations (1.7%). The highest esophagus temperature showed higher in the GH group than that in the non-GH group (42.6?C vs. 41.8?C, p= 0.027). When we determined the esophageal temperature detected GH using ROC curve, 42.4?C of esophagus temperature was the best value with 64% sensitivity and 64% specificity (p= 0.0214, area under curve 0.65).Conclusion:Esophagus temperature monitoring is useful for the prediction of the asymptomatic gastric hypoperistalsis after radiofrequency catheter ablation for atrial fibrillation.