Ultra-high-resolution mapping is useful in the ablation of accessory pathways. However, in patients with accessory pathways in the coronary sinus (CS) diverticulum, treatment with endocardial ablation may be challenging. Patients suspected of having subepicardial accessory pathways may require the examination of the venous anomaly using CS angiography.
Keywords: Wolff‐Parkinson‐White syndrome; accessory pathway; catheter ablation; coronary sinus diverticulum; high‐density mapping.
© 2021 The Authors. Clinical Case Reports published by John Wiley & Sons Ltd.