A 43-year-old man presented after ventricular fibrillation cardiac arrest with evidence of pre-excited atrial fibrillation. Electrophysiology study with guideline-directed testing demonstrated a low risk accessory pathway effective refractory period, which became high-risk with isoproterenol infusion. This case represents a challenging scenario wherein a high-risk pathway may be misclassified using the currently indicated methods of risk stratification.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6207237PMC
http://dx.doi.org/10.4022/jafib.2054DOI Listing

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