Interrelationships between interventricular electrical delays in cardiac resynchronization therapy.
activation propagation
cardiac resynchronization therapy
correlation
interventricular delays
latest-activated electrode
local electrical delay
Journal
Journal of cardiovascular electrophysiology
ISSN: 1540-8167
Titre abrégé: J Cardiovasc Electrophysiol
Pays: United States
ID NLM: 9010756
Informations de publication
Date de publication:
09 2020
09 2020
Historique:
received:
19
04
2020
revised:
07
06
2020
accepted:
14
06
2020
pubmed:
21
6
2020
medline:
15
7
2021
entrez:
21
6
2020
Statut:
ppublish
Résumé
In cardiac resynchronization therapy, pacing the left ventricle (LV) at sites of prolonged electrical delay is associated with better outcomes. We sought to characterize the interrelationships between intrinsic, right-ventricular (RV)-paced, and LV-paced interventricular delays. The following electrical timings were measured at implantation for all electrodes of the LV quadripolar leads: QLV, interventricular delay in intrinsic rhythm (RVs-LVs), in RV-paced rhythm (RVp-LVs), and in LV-paced rhythm (LVp-RVs). We included 32 patients (78% men, age 72 years, LV ejection fraction 29%, left bundle branch block 84%). QLV and RVs-LVs were correlated (R Intrinsic and RV-paced interventricular electrical delays are correlated, but there is substantial heterogeneity between patients. The latest-activated electrode may be different between RVs-LVs and RVp-LVs, and this might have important implications in selecting the optimal LV vector.
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
2405-2414Informations de copyright
© 2020 Wiley Periodicals LLC.
Références
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