High-resolution 3D mapping of epicardial conduction during marshall bundle-related atrial tachycardia

Rintaro Hojo, Seiji Fukamizu, Satoshi Miyazawa, Iwanari Kawamura

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

A 73-year-old woman was admitted for atrial tachycardia (AT) ablation. The activation map and pacing study indicated that the AT propagated around the left pulmonary vein and that the Marshall bundle (MB) bypassed the scar area of the left pulmonary vein ridge and mitral isthmus. The Rhythmia Mapping System revealed double potentials propagated along the assumed position of the MB. The mapping system includes a confidence mask that can be used to visually identify low-confidence areas of the map based upon extremely low-voltage signals. Given the low-voltage area in the endocardial side, the epicardial conduction was emphasized.

Original languageEnglish
Pages (from-to)298-301
Number of pages4
JournalJournal of Arrhythmia
Volume34
Issue number3
DOIs
StatePublished - 1 Jun 2018
Externally publishedYes

Keywords

  • Atrial fibrillation
  • Atrial tachycardia
  • Epicardium
  • High-resolution mapping
  • Marshall bundle

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