BACKGROUND: Atrioventricular (AV) block is one of the most frequent complications of CoreValve transcatheter aortic valve implantation (TAVI). The aim of this study was to analyze the effects of CoreValve implantation on AV conduction. METHODS AND RESULTS: Electrophysiological study was performed immediately before and after CoreValve implantation in 18 consecutive, permanent pacemaker-free patients. An electrode was placed on the His bundle during valve implantation, and data were continuously recorded during the procedure. With surface ECG, a median (first, third quartile) QRS width of 96 (84, 116) to 150 (121, 164) ms (P=0.001) and PR interval of 180 (159, 216) to 210 (190, 240) ms (P=0.008) were significantly prolonged, and QRS axis was left deviated 30° (-32°, 46°) to -20° (-60°, 2°) (P=0.005). With intracardiac electrograms, the AH (97 [70, 123] to 115 [96, 135] ms, P=0.021) and HV (52 [42, 55] to 60 [50, 70] ms, P=0.002) intervals were increased. At the end of the procedure, we observed significant ECG- or electrophysiological study-persistent conduction disturbances in 14 (78%) patients. Five patients experienced transient changes (2 AV blocks and 3 left bundle branch blocks). CONCLUSIONS: CoreValve implantation worsens AV conduction in most patients, either transiently or permanently. This worsening is the result of direct damage either on the His bundle or on the AV node.
BACKGROUND:Atrioventricular (AV) block is one of the most frequent complications of CoreValve transcatheter aortic valve implantation (TAVI). The aim of this study was to analyze the effects of CoreValve implantation on AV conduction. METHODS AND RESULTS: Electrophysiological study was performed immediately before and after CoreValve implantation in 18 consecutive, permanent pacemaker-free patients. An electrode was placed on the His bundle during valve implantation, and data were continuously recorded during the procedure. With surface ECG, a median (first, third quartile) QRS width of 96 (84, 116) to 150 (121, 164) ms (P=0.001) and PR interval of 180 (159, 216) to 210 (190, 240) ms (P=0.008) were significantly prolonged, and QRS axis was left deviated 30° (-32°, 46°) to -20° (-60°, 2°) (P=0.005). With intracardiac electrograms, the AH (97 [70, 123] to 115 [96, 135] ms, P=0.021) and HV (52 [42, 55] to 60 [50, 70] ms, P=0.002) intervals were increased. At the end of the procedure, we observed significant ECG- or electrophysiological study-persistent conduction disturbances in 14 (78%) patients. Five patients experienced transient changes (2 AV blocks and 3 left bundle branch blocks). CONCLUSIONS: CoreValve implantation worsens AV conduction in most patients, either transiently or permanently. This worsening is the result of direct damage either on the His bundle or on the AV node.
Authors: Solomon J Sager; Abdulla A Damluji; Joshua A Cohen; Sachil Shah; Brian P O'Neill; Carlos E Alfonso; Claudia A Martinez; Robert J Myerburg; Alan W Heldman; Mauricio G Cohen; Donald B Williams; Roger G Carrillo Journal: J Interv Card Electrophysiol Date: 2016-05-28 Impact factor: 1.900
Authors: Robert M van der Boon; Rutger-Jan Nuis; Nicolas M Van Mieghem; Luc Jordaens; Josep Rodés-Cabau; Ron T van Domburg; Patrick W Serruys; Robert H Anderson; Peter P T de Jaegere Journal: Nat Rev Cardiol Date: 2012-05-01 Impact factor: 32.419
Authors: Emmanuel Chorianopoulos; Ulrike Krumsdorf; Sven T Pleger; Hugo A Katus; Raffi Bekeredjian Journal: Clin Res Cardiol Date: 2011-12-18 Impact factor: 5.460
Authors: Cláudio Monteiro; Andres Di Leoni Ferrari; Paulo Ricardo Avancini Caramori; Luiz Antonio Ferreira Carvalho; Dimytri Alexandre de Alvim Siqueira; Luiz Eduardo Koenig São Thiago; Marco Perin; Valter C de Lima; Enio Guérios; Fabio Sandoli De Brito Junior Journal: Arq Bras Cardiol Date: 2017-11-27 Impact factor: 2.000