NPPB and atrial fibrillation: The median follow-up time was339 days, and 19 patients (22.6%) suffered AF recurrence after RFCA.Kaplan-Meier analysis that presented in Fig. 4 showed that AF recurrencewas significantly higher in patients with LA LVZ than in those without LA LVZ(31.3% for LVZ vs. 12.8% for non-LVZ, p = 0.023).Furthermore, as shown in Table 5, after adjusting for age, sex, type of AF, LAV,and BNP, the extent of LA LVZ was still a risk factor for AF recurrence (hazardratio [HR]: 1.945; 95% CI: 1.003–1.088; p = 0.034).