Measuring luminal esophageal temperature during pulmonary vein isolation of atrial fibrillation

Figure 2 Position of ablation catheter (A) (left: right anterior oblique, right: left anterior oblique) and luminal esophageal temperature monitoring graph (B). We measured the time when luminal esophageal temperature (LET) reached the cut-off temperature (a), the maximum temperature (T max) of LET, the time to reach T max after the LET reached 42 °C (b) and the time to come back from the delivery of energy end to 42 °C (c), 41 °C (d), 40 °C (e), 39 °C (f), 38 °C (g) and 37 °C (h), and the temperature before the delivery of energy (i). LSPV: Left superior pulmonary vein; LIPV: Left inferior pulmonary vein; RSPV: Right superior pulmonary vein; RIPV: Right inferior pulmonary vein.