RT Journal Article T1 Timing of Onset and Outcome of New Conduction Abnormalities Following Transcatheter Aortic Valve Implantation: Role of Balloon Aortic Valvuloplasty A1 Campelo-Parada, Francisco et al. A1 Nombela-Franco, Luis A1 Rodés-Cabau, Josep A1 Pérez Castellano, Nicasio A1 Macaya Miguel, Carlos AB Introduction and objectives: Little is known about the timing of onset and outcome of conduction abnormalities (CA) following balloon-expandable transcatheter aortic valve implantation. The aim of this study was to examine the timing of CA and determine the impact of balloon aortic valvuloplasty (BAV) on the persistence of these abnormalities.Methods: A total of 347 patients were included. Of these, 75 had a continuous electrocardiogram recording and a 6-lead electrocardiogram at each step of the procedure.Results: In the transcatheter aortic valve implantation population undergoing continuous electrocardiogram monitoring, new-onset left bundle branch block (LBBB) or third-degree atrioventricular block occurred in 48 (64%) and 16 (21.3%) patients, with 51.5% of CA occurring before valve implantation. Left bundle branch block persisted more frequently at hospital discharge (53.8 vs 22.7%; P=.028) and at 1-month follow-up (38.5 vs 13.6%; P=.054) when occurring before valve implantation. Balloon aortic valvuloplasty prior to valve implantation was used in 264 (76.1%) patients, and 78 (22.5%) had persistent LBBB or complete atrioventricular block requiring pacemaker implantation. Persistent LBBB or unresolved atrioventricular block at 1 month occurred more frequently in the BAV group (76.1 vs 47.6%; P=.021), and the use of BAV was associated with a lack of CA resolution (OR, 3.5; 95%CI, 1.17-10.43; P=.021).Conclusions: In patients undergoing a balloon-expandable transcatheter aortic valve implantation, more than half of CA occurred before valve implantation. Early occurrence of CA was associated with a higher rate of persistence at 1-month follow-up. The use of BAV was associated with an increased risk of CA persistence. PB Sociedad española de cardiología SN 1885-5857 YR 2018 FD 2018-03-01 LK https://hdl.handle.net/20.500.14352/100552 UL https://hdl.handle.net/20.500.14352/100552 LA eng NO Campelo-Parada F, Nombela-Franco L, Urena M, Regueiro A, Jiménez-Quevedo P, Del Trigo M, Chamandi C, Rodríguez-Gabella T, Auffret V, Abdul-Jawad Altisent O, DeLarochellière R, Paradis JM, Dumont E, Philippon F, Pérez-Castellano N, Puri R, Macaya C, Rodés-Cabau J. Timing of Onset and Outcome of New Conduction Abnormalities Following Transcatheter Aortic Valve Implantation: Role of Balloon Aortic Valvuloplasty. Rev Esp Cardiol (Engl Ed). 2018 Mar;71(3):162-169. English, Spanish. doi: 10.1016/j.rec.2017.04.010. Epub 2017 May 27. PMID: 28566243. DS Docta Complutense RD 20 abr 2025