Intracardiac Echocardiography-Guided Left Atrial Appendage Occlusion: A Comprehensive Narrative Review

Area of Science:

• Cardiology
• Medical Imaging
• Interventional Procedures

Background:

• Atrial fibrillation necessitates left atrial appendage occlusion (LAAO) in patients intolerant to anticoagulation.
• Transesophageal echocardiography (TEE) is a common imaging modality for LAAO.
• Intracardiac echocardiography (ICE) presents an alternative imaging approach.

Purpose of the Study:

• To review current evidence on ICE-guided LAAO.
• To compare ICE-guided LAAO with TEE-guided LAAO.
• To identify the benefits and challenges of ICE in LAAO procedures.

Main Methods:

• Narrative review of contemporary observational studies.
• Synthesis of data on procedural success, complications, and outcomes.
• Analysis of imaging capabilities and procedural steps.

Main Results:

• ICE provides real-time, high-resolution imaging for accurate LAAO guidance.
• Procedural success and complication rates are comparable to TEE.
• ICE may reduce fluoroscopy time and avoid general anesthesia.
• Challenges include a learning curve and potential for increased costs.

Conclusions:

• ICE is a feasible alternative for LAAO guidance with comparable efficacy to TEE.
• Further research, including randomized trials, is needed to establish ICE as a primary approach.
• Advancements like 3D/4D ICE and AI integration may enhance future applications.