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Updated: Aug 5, 2025

Catheter Ablation in Combination With Left Atrial Appendage Closure for Atrial Fibrillation
Published on: February 26, 2013
Hidden problems in a case of atrial fibrillation
Adrian Espejel-Guzman1, Aldo Cabello-Ganem1, Jose C Armendariz-Ferrari2
1Department of Nuclear Cardiology, National Institute of Cardiology Ignacio Chavez, Mexico City, Mexico.
Congenital heart defects like cor triatriatum sinister can predispose individuals to atrial fibrillation (AF). Early detection through multimodal imaging is crucial for effective management and improved prognosis in AF patients.
Area of Science:
- Cardiology
- Cardiac Surgery
Background:
- Atrial fibrillation (AF) is a prevalent cardiac arrhythmia.
- The link between congenital heart defects and AF predisposition requires further elucidation.
Observation:
- A 65-year-old male presented with symptoms of heart failure.
- Transthoracic echocardiogram revealed bi-atrial enlargement, mitral valve dysplasia, severe mitral regurgitation, and a left atrial membrane suggestive of cor triatriatum sinister.
Findings:
- Coronary computed tomography angiography confirmed a soft tissue septum within the left atrium.
- This case highlights cor triatriatum sinister as a potential underlying cause of AF.
Implications:
- Multimodal imaging is essential for diagnosing complex congenital heart anomalies contributing to AF.
- Timely diagnosis and intervention for cor triatriatum sinister offer an excellent prognosis.
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