Cardiac Codex

Atrioesophageal Fistula

A EP Studies & Ablation term on the RCES exam blueprint, defined for cath lab and EP clinicians.

A rare but lethal complication of thermal ablation (RF or cryoablation) in which heat or cold diffusion penetrates the posterior left atrial wall and injures the adjacent esophagus; a key driver of interest in non-thermal ablation alternatives like PFA.

Domain: EP Studies & Ablation · Blueprint: RCES exam guide

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Cardiac Codex is an independent study tool published by MdoubleA LLC, not affiliated with or endorsed by CCI or any certifying body. This glossary entry is exam-preparation information, not medical advice or a substitute for clinical judgment. Always verify current clinical practice against primary sources and institutional protocol.