Leadless pacemakers with flexible tines showed a greater reduction in tricuspid regurgitation effective regurgitant orifice area compared to longer leadless pacemakers with helix screws and transvenous pacemakers (p=0.0147).
Observational (n=60)
Do longer leadless pacemakers with helix screws affect tricuspid regurgitation differently than leadless pacemakers with flexible tines or transvenous pacemakers in patients undergoing pacemaker implantation?
Leadless pacemakers with helix screws may have a less favorable effect on tricuspid regurgitation improvement at 1 week post-implantation compared to leadless pacemakers with flexible tines.
p-value: p=0.0147
Abstract Backgrounds Leadless pacemakers (LPs) with flexible tines have been reported not to worsen tricuspid regurgitation (TR) than transvenous pacemakers after pacemaker implantation (PMI). Other longer LPs with helix screws have recently become available. Purpose To clarify whether the longer LPs with helix screws affect tricuspid regurgitation after pacemaker implantation compared with flexible times LPs and transvenous pacemakers. Methods Sixty patients who underwent PMI were studied (34 males, 82±8 years, 29 trans-venous pacemakers,17 LPs with flexible tines, and 14 LPs with helix screws). Clinical data and blood samples were obtained before PMI. Transthoracic echocardiography was performed before and 1 week after PMI to assess conventional echocardiographic parameters and severity of TR by quantitative assessment. Results The TR effective regurgitant orifice area (EROA) decreased post-PMI in LPs with flexible tines (p=0.0030) and LPs with helix screws (p=0.0337), but not in the transvenous pacemakers (p=0.5057). The TR volume decreased post-PMI in LPs with flexible tines (p=0.0159) and LPs with helix screws (p=0.0334), but not in transvenous pacemakers (p=0.8467). The change in TR EROA was greater in LPs with flexible tines compared to LPs with helix screws and transvenous pacemakers (p=0.0147). One patient implanted with LPs with helix screws showed frequent premature ventricular contractions after PMI. Conclusion The longer LPs with helix screws might affect TR, unlike LPs with flexible tines.
Mine et al. (Sat,) conducted a observational in Patients undergoing pacemaker implantation (n=60). Leadless pacemakers with helix screws vs. Leadless pacemakers with flexible tines and transvenous pacemakers was evaluated on Change in tricuspid regurgitation effective regurgitant orifice area (EROA) (p=0.0147). Leadless pacemakers with flexible tines showed a greater reduction in tricuspid regurgitation effective regurgitant orifice area compared to longer leadless pacemakers with helix screws and transvenous pacemakers (p=0.0147).