Open AccessHigh‐resolution 3D mapping of epicardial conduction during Marshall bundle‐related atrial tachycardia
Author(s) -
Hojo Rintaro,
Fukamizu Seiji,
Miyazawa Satoshi,
Kawamura Iwanari
Publication year - 2018
Publication title -
journal of arrhythmia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.463
H-Index - 21
eISSN - 1883-2148
pISSN - 1880-4276
DOI - 10.1002/joa3.12067
Subject(s) - medicine , cardiology , ablation , atrial tachycardia , pulmonary vein , tachycardia , atrial fibrillation , accessory pathway , catheter ablation
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.