Fig. 5

Pearson correlation analysis between PA_s, AH_s, HV_s, PR_s interval recorded on “new electrocardiogram” and PA, AH, HV, PR interval recorded on His bundle electrogram. a shows Pearson correlation analysis between PA_s interval and PA interval; b shows Pearson correlation analysis between AH_s interval and AH interval; c shows Pearson correlation analysis between HV_s interval and HV interval; d shows Pearson correlation analysis between PR_s interval and PR interval; PA_s was significantly positively associated with PA interval (r = 0.800; P < 0.01); AH_s interval was significantly positively associated with AH interval (r = 0.792; P < 0.01); HV_s interval was significantly positively associated with HV interval (r = 0.929; P < 0.01); PR_s interval was significantly positively associated with PR interval (r = 0.839; P < 0.001)