Key result
Repeat catheter ablation yields >3 years of AF freedom despite an anomalous left atrial band.
Case Report (n=1)
No
Answers are grounded in this paper and cite their sources.
Such variants may not preclude durable ablation success; extends sparse literature but remains hypothesis-generating.
A 65-year-old man was referred to our hospital with persistent atrial fibrillation (AF). Before the ablation procedure, 3-dimensional computed tomography revealed a left atrial anomalous muscular band connecting the posterior side of the left atrial roof and the right edge of the fossa ovalis. During the first ablation procedure, the band interfered with the manipulation of the catheter, resulting in only the left pulmonary vein (PV) being isolated. However, AF recurred. During the second procedure, careful catheter manipulation permitted complete right PV isolation, after which, the patient has not had AF recurrence for more than 3 years.
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Okajima et al. (2014) conducted a case report in Persistent atrial fibrillation with a left atrial anomalous muscular band (n=1). Catheter ablation (pulmonary vein isolation) was evaluated on Atrial fibrillation recurrence. Repeat catheter ablation achieving complete right and left pulmonary vein isolation despite an anomalous left atrial muscular band resulted in >3 years of freedom from AF recurrence in a 65-year-old man.
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