Left atrial anomalous muscular band detected by computed tomography before catheter ablation in a patient with atrial fibrillation.
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.
Department of Cardiology, Himeji Cardiovascular Center, Japan.
Katsunori
K
Okajima
Department of Cardiology, Himeji Cardiovascular Center, Japan.
Kimitake
K
Imamura
Department of Cardiology, Himeji Cardiovascular Center, Japan.
Gaku
G
Kanda
Department of Cardiology, Himeji Cardiovascular Center, Japan.
Akira
A
Shimane
Anomalous muscular band; Atrial fibrillation; Catheter ablation; Left atrium