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1
Left atrial appendage occlusion (LAAO) is used for stroke prevention in patients with nonvalvular atrial fibrillation when long-term anticoagulation is unsuitable.
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2
Post-implantation imaging findings include device-related thrombus, hypoattenuated thickening, peri-device leak, and residual left atrial appendage patency.
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3
Device-related thrombus (DRT) has an event rate of ischemic stroke of approximately 6.3 per 100 patient-years compared to 1.7 for those without DRT.
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4
Contemporary imaging techniques like CCTA detect residual appendage patency and peri-device leak more frequently than TEE, but clinical actionability varies.
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5
Post-LAAO imaging should focus on risk-weighted interpretation rather than binary surveillance, with management implications based on expert consensus and observational data.
