Does the presence of residual leaks following percutaneous left atrial appendage occlusion increase the risk of adverse events?
TEE-detected peri-device leaks after LAAO are prognostically significant for thromboembolism, whereas CT-detected leaks are more common but not associated with adverse outcomes.
Peri-device leak detected by TEE was associated with adverse events, primarily thromboembolism. Residual leaks detected by CT were more frequent but lacked prognostic significance.
Samaras et al. (Wed,) studied this question.