Durability of mitral isthmus ablation with and without ethanol infusion in the vein of Marshall.
Marshall vein
atrial fibrillation
chemical ablation
ethanol infusion
mitral isthmus
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:
08 2021
08 2021
Historique:
revised:
11
05
2021
received:
17
03
2021
accepted:
17
05
2021
pubmed:
25
5
2021
medline:
21
10
2021
entrez:
24
5
2021
Statut:
ppublish
Résumé
Ethanol infusion in the vein of Marshall (EIVOM) effectively creates a linear ablation lesion in the mitral isthmus (MI). However, data on the long-term success rates of MI ablation is limited. Our cohort consisted of 560 patients with nonparoxysmal atrial fibrillation (AF) who underwent an initial MI ablation. Ablations were performed by only radiofrequency (RF) in 384 (RF group) or by RF and EIVOM in 176 (EIVOM/RF group) patients; 5 ml anhydrous ethanol was used to perform EIVOM in advance of RF. Following EIVOM, RF pulses were delivered to the lateral MI line. Bidirectional MI block was fully achieved in 353/384 (92%) (First 318, Re-do 35) patinents in the RF group and 171/176 (97%) (First 128, Re-do 43) patients in the EIVOM/RF group (p = .09 in the first, p = .10 in the re-do ablation cases). In cases with complete MI line block, recurrent AF or atrial tachycardia was observed in 130/353 (37%) patients in the RF group and in 64/171 (37%) patients in the EIVOM/RF group (log-rank p = .12 in the first, and p = .30 in the re-do ablation cases). Of the total 560 patients, 123 proceeded to the subsequent ablation session. Reconduction across MI line block was observed in 39/80 (49%) patients in the RF group and 25/43 (58%) patients in the EIVOM/RF group (p = .32). EIVOM effectively ensures MI line block; however, the reconduction rate was similar between the two groups.
Substances chimiques
Ethanol
3K9958V90M
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
2116-2126Informations de copyright
© 2021 Wiley Periodicals LLC.
Références
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