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Clinical and Electrophysiological Characteristics of Marshall Bundle-Related Atrial Tachycardia: Considerations Based on a Definitive Diagnosis.
JACC Clin Electrophysiol
November 2024
Department of Cardiology, Institute of Science Tokyo, Tokyo, Japan.
Background: Conventional endocardial mapping cannot fully elucidate Marshall bundle (MB)-related atrial tachycardia (AT).
Objectives: This study aimed to clarify the clinical and electrophysiological characteristics of MB-related AT definitively diagnosed using catheter insertion.
Methods: Forty-eight patients with AT who had previously undergone mitral isthmus ablation were enrolled in this study.
Ethanol marshall bundle elimination, pulmonary vein isolation, and linear ablation for atrial fibrillation with or without heart failure.
Front Cardiovasc Med
November 2024
Department of Cardiology, Wuhan Asia Heart Hospital Affiliated to Wuhan University of Science and Technology, Wuhan, Hubei, China.
Background: In medical practice, atrial fibrillation (AF) is intricately associated with heart failure (HF). Currently, ethanol infusion of vein of Marshall (EIVOM) for AF ablation in HF patients remains significantly limited.
Method: This was a non-randomized, single-center, retrospective observational study.
Ethanol infusion into the vein of Marshall reduced atrial tachyarrhythmia recurrence during catheter ablation: A systematic review and meta-analysis.
Heart Rhythm O2
October 2024
Department of Cardiology and Vascular Medicine, Faculty of Medicine, Universitas Padjadjaran, Hasan Sadikin General Hospital, Bandung, Indonesia.
Background: Ethanol infusion into the vein of Marshall (EIVoM) may increase mitral isthmus bidirectional block (MIBB) and cause local autonomic denervation that may improve outcome.
Objective: This meta-analysis aimed to investigate whether the addition of EIVoM to atrial fibrillation (AF) ablation led to a better outcome.
Methods: Systematic literature search was performed using PubMed, Scopus, ScienceDirect, and Europe PMC for studies that compared the addition of EIVoM during AF ablation with radiofrequency ablation.
Case Report: Ethanol ablation of the Marshall vein as the first step for left atrial tachycardia ablation.
Front Cardiovasc Med
October 2024
Department of Cardiology, Ankara University Faculty of Medicine, Ankara, Türkiye.
Electroanatomic mapping guides complex atrial tachycardia ablations; however, challenges may emerge after pulmonary vein isolation. 3D mapping systems can reveal the mechanism of tachycardia and critical areas that need to be ablated. Sometimes, however, these areas may be located deep inside, to the extent that they cannot be successfully reached by endocardial ablation.
View Article and Find Full Text PDFIntroduction And Importance: Atrial tachycardias (AT) originating from the Marshall bundle (MB) are rare and present significant challenges in diagnosis and management. The authors present the case of a 29-year-old male with recurrent AT successfully treated with a combined ethanol and radiofrequency ablation approach. This case highlights the effectiveness of this dual ablation strategy in resolving AT originating from the MB, contributing valuable insights into managing complex AT cases.
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