Atrial Flutter-Ablation — EECC MCQ

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ModerateCardiologyAtrial Flutter-AblationEECC

A 62-year-old man with new atrial flutter (typical) is symptomatic despite rate control. Which definitive therapy has highest success?

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Correct answer: C — Catheter ablation of the cavotricuspid isthmus

For typical cavotricuspid isthmus-dependent flutter, catheter ablation has high success and is preferred for symptom control. Antiarrhythmic drugs (A,B) have lower long-term efficacy and more toxicity. AV nodal ablation without pacing (D) is not feasible. Rate control only (E) leaves symptoms.

Reference: ACC/AHA/ACCP/HRS Guideline (2023): Atrial Fibrillation/Flutter Management (Secondary Source)