Open AccessSpatial distribution of ventricular late potentials assessed by the newly developed signal‐averaged vector‐projected 187‐channel electrocardiogram in patients with old myocardial infarction
Author(s) -
Futagawa Keisuke,
Shoda Morio,
Nakai Kenji,
Kasanuki Hiroshi,
Hagiwara Nobuhisa
Publication year - 2013
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 - 10.1016/j.joa.2012.09.006
Subject(s) - medicine , cardiology , myocardial infarction , signal averaged electrocardiogram , electrocardiography , risk stratification , high resolution , remote sensing , geology
Abstract Risk stratification of lethal arrhythmias is important for the management of ischemic heart disease. Recently, we developed a novel 187‐channel signal‐averaged vector‐projected high‐resolution electrocardiograph (187‐ch SAVP‐ECG) with a Mason–Likar lead system with 10 electrodes. The purpose of this study was to examine the feasibility of a noninvasive evaluation of the spatial distribution of high‐frequency late potentials (HFLPs) in patients with myocardial infarction (MI) by using the 187‐ch SAVP‐ECG. Sixty‐four MI patients (7 women and 57 men), between the age of 39 and 84 years (mean 67.7±9.7 years), with positive ventricular late potentials defined by an X, Y, Z‐lead ECG were studied. The integrated ventricular 187‐ch SAVP‐ECG could identify the area of HFLPs that was projected virtually by mathematically calculated 187 electrograms on the body surface in all patients, and differentiate the locations of MI. The 187‐ch SAVP‐ECG can be a practical and noninvasive examination tool for identifying the location of infarction areas and possible arrhythmogenic substrates with slow conduction properties in patients with MI.