Patient Characteristics
The baseline characteristics of the 8 included patients are summarized
in Table 1. Multiple reentrant circuits occurred both in patients with a
postablation history (6 patients) and those without a history of
previous surgical or catheter intervention (2 patients). One patient had
dilated cardiomyopathy with left bundle branch block (LBBB) and was
treated with CRT-D. One patient experienced ablation of the CTI due to
typical atrial flutter. Five patients experienced AF ablation, and the
other 2 patients had no obvious structural heart disease detectable by
echocardiography and no history of previous surgical or catheter
intervention. Six patients experienced AF ablation without any
fragmented EGM-based ablation.