Conclusion
Herein we report the first detailed case of repeat CNA in a patient with recurrent VVS despite successful CNA seven months prior. Repeat CNA after recurrent VVS is both feasible and safe. It may be characterized by a blunted chronotropic response to atropine and a failure to redemonstrate bradycardic responses to HFS. It may reproduce chronotropic evidence of vagal denervation after prior post-CNA recovery of the same. Repeat CNA lacks well-defined patient selection criteria and consensus procedural protocols, including optimal means of vagal denervation testing. The present case underscores the importance of elucidating these measures.
Acknowledgements: none