Utility of Esophageal Temperature Monitoring During Pulmonary Vein Isolation for Atrial Fibrillation Using Duty-Cycled Phased Radiofrequency Ablation

Using a duty-cycled, phased RF ablation system is safe and effective to isolate PVs. No Eso alteration was documented after ablation when LET was not monitored. This suggests that the LET probe may contribute to the thermal effect. Whether the documented increments in LET are due to direct tissue heating or possible interaction between the LET probe requires further investigation.