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Figure 3 Effective refractory period of the atrioventricular node (a) and right atrium (RA) (b). (a) The effective refractory period (ERP) of atrioventricular node was prolonged in the Brugada syndrome patients with and without atrial fibrillation (AF). (b) There was no significant difference between the ERP of the RA in the Brugada syndrome group and that in the control group. There was also no significant difference between the ERP of the RA in the Brugada syndrome patients without AF and that in the control group. Open circles show the Brugada syndrome group with spontaneous AF. Solid circles show the Brugada syndrome patients without spontaneous AF. The error bars represent the 95% confidence interval. NS = not significant.
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