作者
Gianfranco Piccirillo, Federica Moscucci, Gaetana D’Alessandro, Matteo Pascucci, Pietro Rossi, Seongwook Han, Lan S Chen, Shien-Fong Lin, Peng-Sheng Chen, Damiano Magrì
发表日期
2014/1/1
期刊
Heart Rhythm
卷号
11
期号
1
页码范围
110-118
出版商
Elsevier
简介
Background
Evidence from a canine experimental acute myocardial infarction (MI) model shows that until the seventh week after MI, the relationship between stellate ganglion nerve activity (SGNA) and vagal nerve activity (VNA) progressively increases.
Objective
The purpose of this study was to evaluate how autonomic nervous system activity influences temporal myocardial repolarization dispersion at this period.
Methods
We analyzed autonomic nerve activity as well as QT and RR variability from recordings previously obtained in nine dogs. From a total of 48 short-term ECG segments, 24 recorded before and 24 recorded 7 weeks after experimentally-induced MI, we obtained three indices of temporal myocardial repolarization dispersion: QTe (from Q-wave to T-wave end), QTp (from Q-wave to T-wave peak), and Te (from T-wave peak to T-wave end) variability index (QTeVI, QTpVI, TeVI). We also performed heart …
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