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Updated: May 5, 2026
The WATCHMAN Left Atrial Appendage Closure Device for Atrial Fibrillation
Published on: February 28, 2012
Management of complications associated with percutaneous left atrial appendage closure with or without ablation:
Qi Zou1, Cheng Jiang1, Pengyang Lin1
1Department of Cardiology, Lanzhou University Second Hospital, Lanzhou, China.
Insights
Managing complications during percutaneous left atrial appendage closure (LAAC) is key for patient safety. Prompt interventions for LAAC complications lead to successful outcomes and stroke prevention in non-valvular atrial fibrillation (AF) patients.
Area of Science:
- Cardiology
- Interventional Cardiology
- Medical Device Technology
Background:
- Percutaneous left atrial appendage closure (LAAC) offers an alternative to anticoagulation for non-valvular atrial fibrillation (AF).
- Effective management of LAAC-related complications is vital for procedural success and patient safety.
Purpose of the Study:
- To review the center's experience in managing procedural complications from 512 LAAC procedures.
- To outline strategies for mitigating risks and adverse events associated with LAAC.
Main Methods:
- Retrospective analysis of 512 LAAC cases performed between January 2020 and December 2023.
- Identification and categorization of intervention-requiring complications.
- Review of management strategies and patient outcomes.
Main Results:
- Eleven significant complications were identified, including intraoperative thrombosis, pericardial effusion/tamponade, device-related thrombosis, peri-device leak, systemic embolism, and bleeding.
- Complications stemmed from factors like heparin resistance, device implantation, atrial appendage damage, and medication use.
- All patients with complications were safely discharged, with no adverse events reported during follow-up due to proactive interventions.
Conclusions:
- Targeted interventions for immediate procedural complications improve LAAC success rates.
- Strategic management of complications reduces postoperative mortality and disability.
- This approach confirms the viability and safety of LAAC for non-valvular AF patients unsuitable for anticoagulation.
Background:
Percutaneous left atrial appendage closure (LAAC) serves as an alternative prophylactic strategy for patients with non-valvular atrial fibrillation (AF) who cannot undergo anti-coagulation therapy. Proper management of associated complications is crucial to enhancing the procedure's success rate and mitigating perioperative risks and adverse events during follow-up.
Aims:
This study aims to summarize our center's experience and strategies in managing procedural-related complications encountered in 512 cases of LAAC with or without ablation for AF conducted from January 2020 to December 2023.
Results:
We identified 11 significant intervention-requiring complications associated with LAAC with or without Ablation procedure. These included three cases of intraoperative thrombosis, three instances of pericardial effusion or tamponade, one case of device-related thrombosis, one peri-device leak, one systemic embolism, one bleeding episode, and one additional device-related complication. The categorization of intraoperative thrombosis was as follows: one patient exhibited heparin resistance; one experienced thrombosis due to prolonged device implantation during the LAAC with ablation procedure; and one had unexplained intraoperative thrombosis. The pericardial effusion or tamponade likely resulted from damage to the atrial appendage during LAAC device insertion. Two patients encountered device-related thrombosis and systemic embolism events possibly caused by non-standard postoperative antithrombotic medication use; one patient's peri-device leak may have resulted from incomplete endothelialization of the occluder post-surgery; one patient experienced postoperative bladder bleeding; and one patient's device-related complications occurred due to a dislodged strut frame that damaged the left atrial appendage, leading to pericardial effusion. Our proactive interventions enabled all patients with these surgical-related complications to be safely discharged, with subsequent follow-ups showing no adverse events.
Conclusion:
Implementing targeted interventions for immediate procedural-related complications during the LAAC with or without ablation procedures enhances procedural success rates, diminishes postoperative mortality and patient disability, and bolsters stroke prevention efforts. This approach underscores the importance of a strategic response to complications, affirming the procedure's viability and safety in managing non-valvular AF in patients contraindicated for anticoagulation.
