Micra AV Leadless pacemaker implantation after transcatheter aortic valve implantation - 31/12/22
, S. Prevot 1, A. Peret 1, L. Nait-Saidi 1, I. Miliani 1, L. Leong-Feng 1, E. Leude-Vaillant 2, A. Vaillant 2, A. Cornen 1, B. Latiere 1, M.P. Giacomoni 1, F. Collet 1, V. Bechet 1, A. Bouharaoua 1, P. Dieuzaide 1Résumé |
Introduction |
Transvenous pacemaker (PM) implantation is a complication in patients undergoing transcatheter aortic valve implantation (TAVI). Recently, a second-generation of leadless PMs able of atrioventricular (AV) synchronous pacing have been introduced and could be an alternative when ventricular pacing is required after TAVI. Real-world data on Micra AV after TAVI are still lacking.
Objective |
Our aim was to determine the per- and post-procedural outcomes in patients with Micra AV leadless PM implantation after TAVI.
Method |
A total of 20 consecutive patients underwent Micra AV leadless PM implantation after TAVI between November 2020 and June 2021.
Results |
The main indication for ventricular pacing was high-degree atrioventricular block (55% of patients) and left bundle branch block associated with prolonged HV interval (45% of patients). At discharge, mean (SD) ventricular pacing threshold was 0.397±0.11V at 0.24ms and ventricular impedance was 709.4±139.1Ω. At 1-month follow-up, 95% of patients were programmed in VDD pacing mode. Mean (SD) ventricular pacing threshold was 0.448±0.094V at 0.24ms. In patients with ventricular pacing>90% (n=5), mean AM-VP was 72.5±8.3%. Pacing threshold at 1-month was not significantly different compared to discharge (P=0.1088). Mean (SD) impedance was 631.0±111.9Ω, which remained stable at discharge (P=0.0813). No procedural complications occurred during implantation. At 1-month follow-up, two patients displayed atrial under-sensing.
Conclusion |
Micra AV leadless PM implantation after TAVI is associated with a low complication rate and good device performance at 1-month post-implantation.
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Vol 15 - N° 1
P. 100 - janvier 2023 Retour au numéro
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