Detection of certain heart arrhythmia by digital spectral analysis of ECGs

Certain dangerous heart arrhythmia manifest themselves as late potentials in ECGs. Their detection from non-invasively collected, averaged ECG signals is highly desirable. Present measurements define the part of the time axis to be analyzed, apply a hopping-window DFT, search for the window with the...

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Bibliographic Details
Main Authors: Heute, U., Arevalo, L., Menzner, R., Weber, K., Kreutzer, U., Eiber, H.
Format: Conference Proceeding
Language:English
Subjects:
Electrocardiography
Energy measurement
Heart
Spectral analysis
Time measurement
Online Access:Request full text
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Summary:Certain dangerous heart arrhythmia manifest themselves as late potentials in ECGs. Their detection from non-invasively collected, averaged ECG signals is highly desirable. Present measurements define the part of the time axis to be analyzed, apply a hopping-window DFT, search for the window with the most significant increase of higher-frequency components, and determine, as a diagnostic feature, the quotient of the energies in the upper and the lower part of the spectrum. In a detailed study, the parameters of such a procedure are examined and optimized. Then, alternative methods-based both on DFT and parametric spectrum descriptions-are investigated. A novel approach is shown to improve the diagnostic certainty conceivably.< >
ISSN:1058-6393
2576-2303
DOI:10.1109/ACSSC.1993.342511