Arrhythmias & electrophysiology
Clinical and Electrophysiological Characteristics of Marshall Bundle–Related Atrial Tachycardia: Considerations Based on a Definitive Diagnosis
Authors' conclusion
Understanding the distinct clinical and electrophysiological characteristics of MB-related AT can facilitate the diagnosis and treatment of this AT type.
Study context
- Population
- Patients with atrial tachycardia (AT) who had previously undergone mitral isthmus ablation
- Participants
- 48 patients
- Outcome
- MB-related AT characteristics
Main finding
As reported in the abstract
Diagnosed with Marshall bundle (MB)-related AT
20 of 48
Activation along vein of Marshall (VOM) descending
13
Activation along VOM ascending
7
Persistent AT despite VOM conduction block
2
Observational data: associations, not effects.
Further findings
| Outcome | Chemical ablation | Radiofrequency ablation |
|---|---|---|
| Acute termination and recurrence by ablation typeRecurrence | 0 of 13 | 4 of 7 |
- Acute termination and recurrence by ablation type — Acute termination of AT
- 20
Original publication
Clinical and Electrophysiological Characteristics of Marshall Bundle–Related Atrial Tachycardia: Considerations Based on a Definitive Diagnosis. JACC Clin Electrophysiol. Published 18 December 2024. doi:10.
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