DISCUSSION
We investigated the relationship between the characteristics of the SVC-ERP and the pacing inducibility of AF. Our major findings were as follows: (1) the mean value of the average SVC-ERP in all patients was 273.8±43.4 ms; (2) the pacing-induced AF rate was 36%; (3) the SIG had a significantly shorter SVC-ERP than the non-SIG; and (4) the SVC-ERP dispersion was not significantly different between the two groups.