3.5 Case presentation of a successful CST ablation technique
This case was a patient with paroxysmal AF who underwent de novoablation with a CB (Figure 3). The LSPV was not isolated after the first CB application with an NT of -52°C and complete LSPV occlusion (Figure 4A). We did not add a CB application to the LSPV but instead attempted LIPV ablation. At 21 seconds after initiating the ablation, both the LSPV and LIPV were simultaneously isolated (Figure 4B). Furthermore, frequent LIPV ectopic beats, which conducted to the LSPV without conducting to the LA, were observed. These electrophysiological findings could not be explained without the presence of an intervening connection between the LSPV and LIPV.