Intracardiac echocardiography-guided left atrial appendage occlusion: The path to independence.

ABSTRACT

INTRODUCTION AND OBJECTIVES: Transesophageal echocardiography (TEE) has been the standard method for guiding left atrial appendage occlusion (LAAO) procedures. Recently, intracardiac echocardiography (ICE) has emerged as an alternative to TEE due to several advantages, particularly the avoidance of general anesthesia. This analysis aims to assess the safety, feasibility and efficacy of ICE-guided LAAO procedures. METHODS: We performed a retrospective analysis of ICE-guided LAAO procedures, including a comparison of embolic and bleeding events with the predicted standard scores and a comparison with TEE-guided procedures. RESULTS: A total of 88 patients underwent echocardiography-guided percutaneous LAAO (43 patients with TEE and 45 with ICE), mean age 74.9 years, 68.2% male. In the ICE-guided population, the technical success rate was 93% and the major complication rate was 8.8%. During follow-up, yearly stroke and major bleeding rates were 1.4% and 8.4%, respectively, compared to the 4.0% and 8.7% predicted by the CHA2DS2-VASc and HAS-BLED scores. In the TEE versus ICE analysis (similar baseline characteristics), no statistically significant differences were seen regarding technical success (95.3% vs. 93.3%), procedure-related complications (14.0% vs. 8.9%), device thrombus (2.3% vs. 0%), residual minor peridevice leaks (14.0% vs. 24.4%), one-year all-cause mortality (9.3% vs. 4.4%), stroke (9.3% vs. 2.2%) or major bleeding events (9.3% vs. 11.1%). CONCLUSION: ICE-guided LAAO was a safe and effective therapeutic strategy in a high embolic and bleeding risk population, compared to the event rates predicted by the CHA2DS2-VASc and HAS-BLED scores. The ICE-guided procedure compared well to TEE-guided procedures regarding procedure feasibility, safety, and efficacy.