Abstract

Atrial fibrillation (AF), the most prevalent arrhythmia worldwide, is associated with an annual risk of ischemic stroke of up to 5%, with approximately 98% of thrombi originating from the left atrial appendage (LAA). Direct oral anticoagulants or vitamin K antagonists remain the gold standard for preventing systemic thromboembolism in patients with AF. LAA occlusion (LAAO) is an alternative stroke prevention technique for patients with AF who cannot tolerate long-term anticoagulation. Percutaneous LAAO typically employs a multimodal imaging approach with contrast fluoroscopy and transesophageal echocardiography (TEE) for visualization, device selection and deployment, and complication monitoring. TEE is also used for follow-up imaging. However, it necessitates general anesthesia or deep sedation and is associated with a high risk of adverse events. Three-dimensional intracardiac echocardiography (3D ICE) has been proposed as a viable alternative to TEE for LAAO procedures. In this review, we summarized the current evidence regarding ICE guidance in LAAO procedures. We also presented a case series of consecutive patients presenting at our center who underwent LAAO, which was performed by a single operator using a minimalist approach of moderate sedation, 3D ICE, and same-day discharge. We also presented a summary of the minimalist approach to LAAO using 3D ICE and detailed procedural steps of 3D ICE catheter manipulation for successful LAAO intervention.

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