Author + information
- Krissada Meemook,
- Shunsuke Kubo,
- Yoshifumi Nakajima,
- Mamoo Nakamura,
- Asma Hussaini and
- Saibal Kar
Backgrounds: Percutaneous left atrial appendage (LAA) closure using WATCHMAN device has been reported to be effective in atrial fibrillation patients. Although residual LAA trabeculations is observed after WATCHMAN implantation in some cases, the clinical impact of the residual trabeculations is unknown.
Methods: From September 2006 to July 2015, WATCHMAN device was successfully implanted in 159 patients with no residual flow into LAA. Residual LAA trabeculations was evaluated by LAA angiography and/or transesophageal echocardiography (TEE) after device implantation. Residual trabeculations cannot be evaluated in 3 patients because of the poor image quality. Therefore, 156 patients were included in this study, and clinical outcomes were compared between patients with and without residual LAA trabeculations.
Results: There were 60 patients (38%) with residual trabeculations after WATCHMAN implantation. There were no significant between-group differences of LAA type and implanted device size. At a mean follow-up of 35.6±24.1 months, no device embolization occurred during follow-up. The cumulative incidence of all-cause death or stroke was similar between the 2 groups (23.3% vs. 22.9%, p>0.999). The rates of patients with color flow to LAA and device-related thrombus at follow-up TEE within 1 year did not differ significantly between 2 groups (21.95% vs. 14.86%, p=0.482; 2.44% vs. 1.35%, p>0.999).
Conclusions: This study demonstrated no clinical impact of residual LAA trabeculations after WATCHMAN device implantation. This finding may be helpful to decide the endpoint of WATCHMAN procedure.
Poster Hall, Hall C
Friday, March 17, 2017, 3:45 p.m.-4:30 p.m.
Session Title: Structural Heart Interventions: Focus on Mitral Valve, Left Atrial Appendage and HOCM
Abstract Category: 24. Interventional Cardiology: Mitral and Structural Heart Disease
Presentation Number: 1156-167
- 2017 American College of Cardiology Foundation