Your browser doesn't support javascript.
loading
Identification and Characterization of Sites Where Persistent Atrial Fibrillation Is Terminated by Localized Ablation.
Zaman, Junaid A B; Sauer, William H; Alhusseini, Mahmood I; Baykaner, Tina; Borne, Ryan T; Kowalewski, Christopher A B; Busch, Sonia; Zei, Paul C; Park, Shirley; Viswanathan, Mohan N; Wang, Paul J; Brachmann, Johannes; Krummen, David E; Miller, John M; Rappel, Wouter Jan; Narayan, Sanjiv M; Peters, Nicholas S.
Afiliação
  • Zaman JAB; From the Department of Cardiovascular Medicine, Stanford University, Palo Alto, CA (J.A.B.Z., M.I.A., T.B., C.A.B.K., P.C.Z., S.P., M.N.V., P.J.W., S.M.N.); Imperial Centre for Cardiac Engineering, Imperial College London, United Kingdom (J.A.B.Z., N.S.P.); Cardiac Electrophysiology, Cedars Sinai He
  • Sauer WH; From the Department of Cardiovascular Medicine, Stanford University, Palo Alto, CA (J.A.B.Z., M.I.A., T.B., C.A.B.K., P.C.Z., S.P., M.N.V., P.J.W., S.M.N.); Imperial Centre for Cardiac Engineering, Imperial College London, United Kingdom (J.A.B.Z., N.S.P.); Cardiac Electrophysiology, Cedars Sinai He
  • Alhusseini MI; From the Department of Cardiovascular Medicine, Stanford University, Palo Alto, CA (J.A.B.Z., M.I.A., T.B., C.A.B.K., P.C.Z., S.P., M.N.V., P.J.W., S.M.N.); Imperial Centre for Cardiac Engineering, Imperial College London, United Kingdom (J.A.B.Z., N.S.P.); Cardiac Electrophysiology, Cedars Sinai He
  • Baykaner T; From the Department of Cardiovascular Medicine, Stanford University, Palo Alto, CA (J.A.B.Z., M.I.A., T.B., C.A.B.K., P.C.Z., S.P., M.N.V., P.J.W., S.M.N.); Imperial Centre for Cardiac Engineering, Imperial College London, United Kingdom (J.A.B.Z., N.S.P.); Cardiac Electrophysiology, Cedars Sinai He
  • Borne RT; From the Department of Cardiovascular Medicine, Stanford University, Palo Alto, CA (J.A.B.Z., M.I.A., T.B., C.A.B.K., P.C.Z., S.P., M.N.V., P.J.W., S.M.N.); Imperial Centre for Cardiac Engineering, Imperial College London, United Kingdom (J.A.B.Z., N.S.P.); Cardiac Electrophysiology, Cedars Sinai He
  • Kowalewski CAB; From the Department of Cardiovascular Medicine, Stanford University, Palo Alto, CA (J.A.B.Z., M.I.A., T.B., C.A.B.K., P.C.Z., S.P., M.N.V., P.J.W., S.M.N.); Imperial Centre for Cardiac Engineering, Imperial College London, United Kingdom (J.A.B.Z., N.S.P.); Cardiac Electrophysiology, Cedars Sinai He
  • Busch S; From the Department of Cardiovascular Medicine, Stanford University, Palo Alto, CA (J.A.B.Z., M.I.A., T.B., C.A.B.K., P.C.Z., S.P., M.N.V., P.J.W., S.M.N.); Imperial Centre for Cardiac Engineering, Imperial College London, United Kingdom (J.A.B.Z., N.S.P.); Cardiac Electrophysiology, Cedars Sinai He
  • Zei PC; From the Department of Cardiovascular Medicine, Stanford University, Palo Alto, CA (J.A.B.Z., M.I.A., T.B., C.A.B.K., P.C.Z., S.P., M.N.V., P.J.W., S.M.N.); Imperial Centre for Cardiac Engineering, Imperial College London, United Kingdom (J.A.B.Z., N.S.P.); Cardiac Electrophysiology, Cedars Sinai He
  • Park S; From the Department of Cardiovascular Medicine, Stanford University, Palo Alto, CA (J.A.B.Z., M.I.A., T.B., C.A.B.K., P.C.Z., S.P., M.N.V., P.J.W., S.M.N.); Imperial Centre for Cardiac Engineering, Imperial College London, United Kingdom (J.A.B.Z., N.S.P.); Cardiac Electrophysiology, Cedars Sinai He
  • Viswanathan MN; From the Department of Cardiovascular Medicine, Stanford University, Palo Alto, CA (J.A.B.Z., M.I.A., T.B., C.A.B.K., P.C.Z., S.P., M.N.V., P.J.W., S.M.N.); Imperial Centre for Cardiac Engineering, Imperial College London, United Kingdom (J.A.B.Z., N.S.P.); Cardiac Electrophysiology, Cedars Sinai He
  • Wang PJ; From the Department of Cardiovascular Medicine, Stanford University, Palo Alto, CA (J.A.B.Z., M.I.A., T.B., C.A.B.K., P.C.Z., S.P., M.N.V., P.J.W., S.M.N.); Imperial Centre for Cardiac Engineering, Imperial College London, United Kingdom (J.A.B.Z., N.S.P.); Cardiac Electrophysiology, Cedars Sinai He
  • Brachmann J; From the Department of Cardiovascular Medicine, Stanford University, Palo Alto, CA (J.A.B.Z., M.I.A., T.B., C.A.B.K., P.C.Z., S.P., M.N.V., P.J.W., S.M.N.); Imperial Centre for Cardiac Engineering, Imperial College London, United Kingdom (J.A.B.Z., N.S.P.); Cardiac Electrophysiology, Cedars Sinai He
  • Krummen DE; From the Department of Cardiovascular Medicine, Stanford University, Palo Alto, CA (J.A.B.Z., M.I.A., T.B., C.A.B.K., P.C.Z., S.P., M.N.V., P.J.W., S.M.N.); Imperial Centre for Cardiac Engineering, Imperial College London, United Kingdom (J.A.B.Z., N.S.P.); Cardiac Electrophysiology, Cedars Sinai He
  • Miller JM; From the Department of Cardiovascular Medicine, Stanford University, Palo Alto, CA (J.A.B.Z., M.I.A., T.B., C.A.B.K., P.C.Z., S.P., M.N.V., P.J.W., S.M.N.); Imperial Centre for Cardiac Engineering, Imperial College London, United Kingdom (J.A.B.Z., N.S.P.); Cardiac Electrophysiology, Cedars Sinai He
  • Rappel WJ; From the Department of Cardiovascular Medicine, Stanford University, Palo Alto, CA (J.A.B.Z., M.I.A., T.B., C.A.B.K., P.C.Z., S.P., M.N.V., P.J.W., S.M.N.); Imperial Centre for Cardiac Engineering, Imperial College London, United Kingdom (J.A.B.Z., N.S.P.); Cardiac Electrophysiology, Cedars Sinai He
  • Narayan SM; From the Department of Cardiovascular Medicine, Stanford University, Palo Alto, CA (J.A.B.Z., M.I.A., T.B., C.A.B.K., P.C.Z., S.P., M.N.V., P.J.W., S.M.N.); Imperial Centre for Cardiac Engineering, Imperial College London, United Kingdom (J.A.B.Z., N.S.P.); Cardiac Electrophysiology, Cedars Sinai He
  • Peters NS; From the Department of Cardiovascular Medicine, Stanford University, Palo Alto, CA (J.A.B.Z., M.I.A., T.B., C.A.B.K., P.C.Z., S.P., M.N.V., P.J.W., S.M.N.); Imperial Centre for Cardiac Engineering, Imperial College London, United Kingdom (J.A.B.Z., N.S.P.); Cardiac Electrophysiology, Cedars Sinai He
Circ Arrhythm Electrophysiol ; 11(1): e005258, 2018 01.
Article em En | MEDLINE | ID: mdl-29330332
ABSTRACT

BACKGROUND:

The mechanisms by which persistent atrial fibrillation (AF) terminates via localized ablation are not well understood. To address the hypothesis that sites where localized ablation terminates persistent AF have characteristics identifiable with activation mapping during AF, we systematically examined activation patterns acquired only in cases of unequivocal termination by ablation. METHODS AND

RESULTS:

We recruited 57 patients with persistent AF undergoing ablation, in whom localized ablation terminated AF to sinus rhythm or organized tachycardia. For each site, we performed an offline analysis of unprocessed unipolar electrograms collected during AF from multipolar basket catheters using the maximum -dV/dt assignment to construct isochronal activation maps for multiple cycles. Additional computational modeling and phase analysis were used to study mechanisms of map variability. At all sites of AF termination, localized repetitive activation patterns were observed. Partial rotational circuits were observed in 26 of 57 (46%) cases, focal patterns in 19 of 57 (33%), and complete rotational activity in 12 of 57 (21%) cases. In computer simulations, incomplete segments of partial rotations coincided with areas of slow conduction characterized by complex, multicomponent electrograms, and variations in assigning activation times at such sites substantially altered mapped mechanisms.

CONCLUSIONS:

Local activation mapping at sites of termination of persistent AF showed repetitive patterns of rotational or focal activity. In computer simulations, complete rotational activation sequence was observed but was sensitive to assignment of activation timing particularly in segments of slow conduction. The observed phenomena of repetitive localized activation and the mechanism by which local ablation terminates putative AF drivers require further investigation.
Assuntos
Palavras-chave
Texto completo
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Fibrilação Atrial / Ablação por Cateter / Mapeamento Potencial de Superfície Corporal / Sistema de Condução Cardíaco / Frequência Cardíaca Idioma: En Ano de publicação: 2018 Tipo de documento: Article
Texto completo
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Fibrilação Atrial / Ablação por Cateter / Mapeamento Potencial de Superfície Corporal / Sistema de Condução Cardíaco / Frequência Cardíaca Idioma: En Ano de publicação: 2018 Tipo de documento: Article