Conclusion:
In this prospective study, JR was required during RF for acute success
in AVNRT. 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 10s resulting in junctional rhythm
may be successful in some patients.
Keywords: SVT, Ablation, Junctional response, cycle length,
duration, success, outcomes