Abstract

A 55-year-old man underwent a surgical Maze procedure for the treatment of nonvalvular atrial fibrillation with concomitant surgical suture ligation of left atrial appendage (LAA). Baseline transesophageal echocardiography (TEE) and computed tomography (CT) angiography revealed a normal LAA free of thrombus (Figure 1A). Ten days after surgery, he developed an acute embolic stroke. Repeat TEE and CT angiography demonstrated an incompletely surgically ligated LAA (ISLL) without thrombus, with the ISLL neck dimensions measuring 3 × 3 mm (Figure 1B).

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