Chandrasekar Palaniswamy et al. JACEP 2017;3:1146-1154 Measurement of Effective Lateral Deviation of the Esophagus (A) Fluoroscopy. (B) Electroanatomic map. Measurement of the distance between the trailing esophageal edge (blue dots) and the ablation lesion set with mechanical esophageal deviation. ABL = ablation; AL = pulmonary vein isolation ablation line; CS = coronary sinus; TE = trailing edge; TP = esophageal temperature-monitoring probe; TS = flexible thoracic tube in esophagus with stylet. Chandrasekar Palaniswamy et al. JACEP 2017;3:1146-1154 ©2017 by American College of Cardiology