Intraprocedural Thrombus Formation During Left Atrial Appendage Closure: A Conservative Approach.

ABSTRACT:

Background

Left atrial appendage closure with the Watchman FLX Pro device (Boston Scientific) is an alternative to anticoagulation in patients at high bleeding risk with atrial fibrillation. Intraprocedural thrombus formation is rare and poses a unique challenge.

Case summary

A 57-year-old man with paroxysmal atrial fibrillation and prior intracranial hemorrhage underwent elective left atrial appendage closure. The Watchman FLX Pro was recaptured twice and was successfully deployed on the third attempt. Shortly after deployment, thrombus was noted at the device's threaded insert. The patient remained hemodynamically stable and was managed conservatively with intravenous heparin. Follow-up imaging confirmed thrombus resolution without embolic complications.

Discussion

SUBMITTER: Easow BM 

PROVIDER: S-EPMC12402348 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature