Fluctuation Index as a Measure of Heartbeat Irregularity
نویسنده
چکیده
A method is proposed to analyze the heartbeat waveform that can yield a reliable characterization of the structure of the pulses. The measure suggested is fluctuation index that is related to another measure found effective in describing chaotic behaviors in a wide variety of physical systems. When applied to the ECG data that include ventricular fibrillation, the fluctuation index is shown to change drastically within a few pulses. Wavelet analysis is used to exhibit different scaling behaviors in different phases. Sensitivity to the pulse shape makes this method an effective tool to diagnose heartbeat irregularities.
منابع مشابه
Scaling Exponent Determined by a Bio-Signal Computation for the Healthy and Diseased Heartbeat
We analyzed heartbeat-intervals by using our own program of detrended fluctuation analysis (DFA). “Alternans” is an arrhythmia exhibiting alternating amplitude or alternating interval from heartbeat to heartbeat, which was first described in 1872 by Traube. Recently, alternans was finally recognized as the harbinger of a cardiac disease because physicians noticed that an ischemic heart exhibits...
متن کاملMeasure the Fluctuation of the Stock Index According to Approximate Entropy and Standard Deviation
Abstract. The concept of entropy has been widely extended to other fields, including information theory and economic research. The economic financial sector of any country is the supplier of financial resources and real economic activities, which are divided into two parts: the money market and the capital market. In this paper, two criteria, approximate entropy and standard deviation have been...
متن کاملEntropy Index as a Measure of Heartbeat Irregularity
A method is proposed to analyze the heartbeat waveform that can yield a reliable characterization of the structure after only a few pulses. The measure suggested is entropy index that is related to the one found effective in describing chaotic behaviors in a wide variety of physical systems. When applied to the ECG data that include ventricular fibrillation, the index is shown to change drastic...
متن کاملHeartbeat Feature Extraction from Vowel Speech Signal Using 2D Spectrum Representation
ECG is a method using to measure the rate and regularity of heartbeats to detect any irregularity in a heart. ECG translates heart electrical activity into wave-line on paper or screen. Our investigations show that heartbeat modulation exists in human voice signal and can be extracted by transformations in frequency domain. In this paper, the 2D spectrum of human vowel speech will be used to ex...
متن کاملThe maximal total irregularity of some connected graphs
The total irregularity of a graph G is defined as 〖irr〗_t (G)=1/2 ∑_(u,v∈V(G))▒〖|d_u-d_v |〗, where d_u denotes the degree of a vertex u∈V(G). In this paper by using the Gini index, we obtain the ordering of the total irregularity index for some classes of connected graphs, with the same number of vertices.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2001