The mechanisms of left septal and anterior wall reentrant atrial tachycardias analyzed with ultrahigh resolution mapping: The role of functional block in the circuit.
atrial tachycardia
catheter ablation
mapping
rhythmia
ultrahigh resolution mapping
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:
05 2021
05 2021
Historique:
revised:
22
02
2021
received:
04
01
2021
accepted:
02
03
2021
pubmed:
9
3
2021
medline:
11
8
2021
entrez:
8
3
2021
Statut:
ppublish
Résumé
Low voltage areas (LVAs) are most commonly observed on the left atrial (LA) septal/anterior wall. We explored the mechanisms of LA septal/anterior wall reentrant tachycardias (LASARTs) using ultrahigh resolution mapping. This study included seven consecutive LASARTs in six patients (75 [62.2-82.8] years, 4 women) who underwent atrial tachycardia (AT) mapping and ablation using Rhythmia systems. The AT cycle length was 266 (239-321) ms. During ATs, 11.0 (9.0-12.9) cm LASARTs consist of not only fixed conduction blocks but also functional conduction blocks. Ultrahigh resolution mapping is highly useful to decide the optimal tailor-made ablation strategy based on the mechanisms.
Sections du résumé
BACKGROUND
Low voltage areas (LVAs) are most commonly observed on the left atrial (LA) septal/anterior wall.
OBJECTIVE
We explored the mechanisms of LA septal/anterior wall reentrant tachycardias (LASARTs) using ultrahigh resolution mapping.
METHODS
This study included seven consecutive LASARTs in six patients (75 [62.2-82.8] years, 4 women) who underwent atrial tachycardia (AT) mapping and ablation using Rhythmia systems.
RESULTS
The AT cycle length was 266 (239-321) ms. During ATs, 11.0 (9.0-12.9) cm
CONCLUSION
LASARTs consist of not only fixed conduction blocks but also functional conduction blocks. Ultrahigh resolution mapping is highly useful to decide the optimal tailor-made ablation strategy based on the mechanisms.
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
1305-1319Informations de copyright
© 2021 Wiley Periodicals LLC.
Références
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