CONCLUSION:
In this prospective study evaluating the impact of each RF application for slow pathway ablation for AVNRT junctional rhythm was required in all for acute success. Cycle length of JR during RF was not predictive of success. Unintended JA block during faster JR was associated with slow pathway block. RF applications as short as 10 seconds resulting in junctional rhythm may be successful in some patients.
Table 1: Comparison of lesion characteristics between successful and unsuccessful RF applications lesions with junctional response during ablation