Catheter Ablation -> Atrial Fibrillation & Atrial Flutter: -> Quality Measures & Complications D-PO01 - Featured Poster Session (ID 11) Poster

D-PO01-159 - Multi-sensor Esophageal Temperature Probe Reduces Incidence Of Ablation Related Thermal Injury (ID 118)


Background: Esophageal temperature monitoring during AF ablation is performed to prevent esophageal thermal injury (ETI).
Objective: To determine whether a multi-sensor temperature probe (MSTP) reduces endoscopy (EGD) detected ETI compared to single sensor temperature probes (SSTP).
Methods: Consecutive patients undergoing AF ablation at the University of Washington, using both cryoballoon (CBA) and radiofrequency ablation (RFA) were included. Ablation stop parameters for SSTP were a rise of 0.2 C from baseline (RFA), or drop below 30 C (CBA). For MSTP, RFA was stopped when the temperature reached 37.5 Celsius while CBA was stopped when the temperature dropped below 25C. EGD findings were compared between MSTP and SSTP and ETI was classified as mild, moderate or severe.
Results: 239 patients met the inclusion criteria, mean age was 65 +/- 10 year (35% female). 203 patients had SSTP, and 36 patients had MSTP. 36% had Cryoballoon and the remainder had radiofrequency ablation. For patients undergoing RFA, ETI was detected in 40 patients monitored using the SSTP and 4 patients using the MSTP (33.9% vs 16.0%; p=0.03). For patients undergoing CBA, ETI was detected in 19 patients monitoring using the SSTP and zero patients using the MSTP (25.0% vs 0%; p=0.03). ETI severity was mild in all patients monitored using the MSTP. For patients monitored using the SSTP, ETI severity was mild in 55 (22.9%), moderate in 5 (2.1%) and severe in 1 patient (0.4%).
Conclusion: The use of multisensory temperature probe with conservative stop criteria significantly lowered the incidence of esophageal thermal injury compared to single sensor temperature probe.