Abstract:A left atrial appendage (LAA) membrane is a very rarely seen anatomical variant of undetermined clinical significance. There exists a scarcity of literature on this subject but remains an important structure to identify due to both a purported association with atrial fibrillation, and for physicians preparing for catheter-directed procedures such as LAA occlusion where the presence of a membrane may increase procedural difficulty. We highlight the unique case of an LAA membrane with a focal fenestration result… Show more
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