A New Spectral Based Characterization of Electrocardiogram Signals in SuddenCardiac Death
A new method of characterization of patient Electrocardiograms(ECG) suffering from Sudden Cardiac Death (SCD)
permits to confirm the role of lower order higher harmonics when approaching the moment of SCD instant. Besides,
several peak amplitudes are detected during the normal heart beat oscillations preceding such cardiac arrest. Abrupt
qualitative changes often encountered in the behavior of nonlinear dynamical systems may be regarded as analogous
to the main features of the changing dynamics of the heartbeat. Indeed, under certain circumstances, the heart rhythm
oscillations may undergo an abrupt change in frequencies and amplitudes of spectral lines. A sliding window FFT
performed on ECGs of two patients suffering from Sudden Cardiac Death, leads to put into evidence the reorganization
of the higher harmonics involving changes in their ranks and their amplitudes.
Keywords: Electrocardiogram (ECG), Spectral Analysis, Sudden Cardiac Death(SCD), sliding window (FFT), Higher Harmonics
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ABOUT THE AUTHOR
Hedi Khammari
Bioinformatics
Hedi Khammari
Bioinformatics