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Updated: Aug 21, 2026
Catheter Ablation in Combination With Left Atrial Appendage Closure for Atrial Fibrillation
Published on: February 26, 2013
Efficacy and safety of concomitant left atrial appendage closure and pulmonary vein isolation compared to left atrial
Isabel Rattka1, Christine Poch1, Tanja Mews1
1School of Medicine and Health, Department of Clinical Medicine-Clinical Department for Cardiology, University Medical Centre, Technical University of Munich, Munich, Germany.
Insights
Combined left atrial appendage closure (LAAC) and pulmonary vein isolation (PVI) reduces stroke risk but increases pericardial effusion risk compared to LAAC alone. Further trials are needed to confirm these findings for atrial fibrillation patients.
Area of Science:
- Cardiology
- Interventional Cardiology
- Electrophysiology
Background:
- Atrial fibrillation (AF) significantly elevates ischemic stroke risk, often from the left atrial appendage (LAA).
- Percutaneous left atrial appendage closure (LAAC) mitigates thromboembolism, while pulmonary vein isolation (PVI) aims to restore normal heart rhythm.
- Existing data on combined LAAC+PVI procedures are inconsistent, necessitating a clearer understanding of their risk-benefit profile.
Purpose of the Study:
- To compare the efficacy and safety of a combined LAAC+PVI procedure against LAAC-only in atrial fibrillation patients.
- To evaluate the impact of combined therapy on systemic thromboembolism and procedural complications.
Main Methods:
- A systematic literature search was conducted across major databases (PubMed, MEDLINE, Scopus, Web of Science).
- Studies comparing outcomes of AF patients undergoing combined LAAC+PVI versus LAAC-only were included.
- A meta-analysis synthesized data from 15 studies involving 335,013 patients.
Main Results:
- Combined LAAC+PVI showed a significant reduction in systemic thromboembolisms (OR=0.76) compared to LAAC-only.
- The combined approach had a higher incidence of periprocedural pericardial effusion requiring drainage (OR=1.72).
- Peri-device leaks were less frequent immediately post-procedure but more common at follow-up; no significant differences in mortality or major bleeding were observed.
Conclusions:
- Combined LAAC+PVI offers a potential benefit in reducing systemic thromboembolisms but carries an increased risk of pericardial effusion.
- Divergent temporal patterns of peri-device leaks warrant further investigation.
- Randomized controlled trials are recommended to validate these findings and solidify the role of combined procedures.
Background:
Atrial fibrillation (AF) is associated with an increased risk of ischemic stroke, primarily originating from the left atrial appendage (LAA). Percutaneous LAA closure (LAAC) reduces appendage-borne thromboembolism, while pulmonary vein isolation (PVI) restores sinus rhythm. Observational data on the combined one-stop procedure are heterogeneous, and data on its risk-benefit profile remain scarce. Thus, a meta-analysis was performed to compare the efficacy and safety of combined LAAC+PVI versus LAAC-only.
Methods:
A structured systematic search of PubMed, MEDLINE, Scopus and Web of Science was performed for studies comparing outcomes of AF patients undergoing combined LAAC+PVI or LAAC-only.
Results:
Fifteen studies reporting data from 335,013 patients (11,839 LAAC+PVI; 323,174 LAAC-only) were included. Combined LAAC+PVI was associated with significantly fewer systemic thromboembolisms at follow-up (OR = 0.76, 95% CI = 0.60-0.96, I2 = 1%) compared to LAAC-only. However, periprocedural pericardial effusion requiring drainage was significantly more frequent in the combined group (OR = 1.72, 95% CI = 1.26-2.34, I2 = 0%). Peri-device leaks were significantly less common immediately post-procedure (OR = 0.57, 95% CI = 0.35-0.92, I2 = 19%), but significantly more frequent on follow-up echocardiography (OR = 1.56, 95% CI = 1.14-2.12, I2 = 71%). Mortality, major bleeding, device-related thrombus, and pericardial effusion without drainage did not differ significantly between groups.
Conclusion:
Combined LAAC+PVI was associated with fewer systemic thromboembolisms than LAAC-only, but a higher periprocedural risk of pericardial effusion requiring drainage and divergent temporal behaviour of peri-device leaks. Randomized controlled trials are warranted to confirm these findings.
