RA volume decreased by 18.8% post-T-TEER but re-dilated by 14.0% at 12 months; sinus rhythm was linked to a significant 16.4% late strain recovery vs. −9.1% in atrial fibrillation.
Does transcatheter tricuspid edge-to-edge repair (T-TEER) improve right atrial structural and functional remodeling over 12 months?
Right atrial remodeling after T-TEER is biphasic, with early volume reduction followed by re-dilation, and late functional recovery is highly dependent on maintaining sinus rhythm.
Absolute Event Rate: 0% vs 0%
Abstract Background Right atrial (RA) remodeling after transcatheter tricuspid edge-to-edge repair (T-TEER) remains poorly characterized, particularly regarding the interplay between structural and functional changes and the role of cardiac rhythm. Objective To evaluate serial RA structural (volume) and functional (strain) remodeling after T-TEER, and to investigate the impact of cardiac rhythm on late functional recovery. Methods In 114 consecutive patients undergoing T-TEER, RA volume and longitudinal strain were assessed at baseline, pre-discharge, 6 months, and 12 months using 2D echocardiography and speckle-tracking. Procedural success was defined as residual tricuspid regurgitation ≤ moderate. Results RA remodeling followed a biphasic course. RA volume decreased significantly immediately post-procedure (−18. 8%, p0. 001), but progressively re-dilated over follow-up (+6. 5% at 6 months, +14. 0% at 12 months). RA strain declined early (−16. 0%, p=0. 001), remained stable to 6 months, and showed minimal improvement by 12 months. Importantly, among patients with procedural success, those in sinus rhythm experienced significant late RA strain recovery compared to those in atrial fibrillation (+16. 4% vs −9. 1%, p=0. 024). Conclusion RA remodeling after T-TEER is biphasic—early unloading is followed by structural re-dilation, while functional recovery is delayed and rhythm-dependent. Maintenance of sinus rhythm is associated with improved RA function. These findings highlight the importance of rhythm management and structured imaging follow-up after T-TEER. RA remodeling trajectories Rhythmₗate strain improvement
Rasmeehirun et al. (Thu,) reported a other. RA volume decreased by 18.8% post-T-TEER but re-dilated by 14.0% at 12 months; sinus rhythm was linked to a significant 16.4% late strain recovery vs. −9.1% in atrial fibrillation.