CAJ | 학술논문

背景:微伏级T波交替是预测室性心律失常的重要指标,有望发展成为一种优越的无创评定发生恶性室性心率失常及猝死危险性的技术.目的:介绍一种利用非线性动力学系统表示周期性的散点图法从而进行T波交替检测的算法.方法:选取连续心跳周期中T波窗口内的采样点序列做散点图,描述T波交替的分布状态.根据奇数序列和偶数序列到原点的距离之和D_(twa)判断T波交替的存在与否.结果与结论:将算法应用到美国MIT/BIH标准心律失常数据库和欧洲ST-T心电数据库进行仿真,将所得到离散数据D_(twa)和谱分析法中表示T波电交替幅值的V_(twa)进行相关性分析得到相关系数γ=0.984.证明该算法能够精确简便地判断T波电交替,可为T波电交替散点图法的深入研究提供思路.
배경:미복급T파교체시예측실성심률실상적중요지표,유망발전성위일충우월적무창평정발생악성실성심솔실상급졸사위험성적기술.목적:개소일충이용비선성동역학계통표시주기성적산점도법종이진행T파교체검측적산법.방법:선취련속심도주기중T파창구내적채양점서렬주산점도,묘술T파교체적분포상태.근거기수서렬화우수서렬도원점적거리지화D_(twa)판단T파교체적존재여부.결과여결론:장산법응용도미국MIT/BIH표준심률실상수거고화구주ST-T심전수거고진행방진,장소득도리산수거D_(twa)화보분석법중표시T파전교체폭치적V_(twa)진행상관성분석득도상관계수γ=0.984.증명해산법능구정학간편지판단T파전교체,가위T파전교체산점도법적심입연구제공사로.
BACKGROUND:The microvolt T-wave alternans (MTWA) is an important index for ventricular arrhythmias prediction and is a promising tool to evaluate non-invasively malignant ventricular arrhythmia and risk of sudden death.OBJECTIVE:To introduce a algorithm for detecting TWA using Poincare mapping method (PM),which is a technique for dynamics systems to display periodic behavior.METHODS:Samples series of beat to beat cycles were selected to prepare Poincare mapping to describe TWA distdbution.D_(twa),which denoted the sum distances between the origin to even and odd series,was used to present the presence and absence of TWA.RESULTS AND CONCLUSION:This algorithm was applied in MIT/BIH Arrhythmia database and European ECG ST-T database,and D_(twa) used for correlation analysis with V_(twa),which denoted TWA amplitude of Spectrum Method.The cross-correlation coefficient was γ= 0.984.The algorithm can identify the absence and presence of TWA accurately and provide idea for further study of TWA-PM.