4.5 | The feasibility of CTI block
In our study, CTI block with PFA was successfully achieved in a high
percentage of patients (96.9%). CTI ablation using a focal PFA catheter
routinely provokes subclinical right coronary
vasospasm,17,18 which was not observed for no coronary
angiography was performed in our series. Pouches among CTI were commonly
observed via intracardiac echocardiography during the
procedure.19 These pouches increase the difficulty of
obtaining a complete CTI block, which are potential risk of cardiac
tamponade for RFCA. PFA could be a good alternative to obtain CTI block
when pouches were observed in CTI. So PFA could be recommended in the
case of typical atrial flutter.