Roman Kepski

Frequency analysis of High Resolution Electrocardiogram

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Abstract

The high resolution ECG can be presented in time domain or in frequency domain. The time domain presentation has been normalised and its clinical usefulness is fully recognised. In contrast the frequency domain is still regarded as an experimental method. In this paper the principles of frequency domain analysis as based on the Fast Fourier Transform are described and two essential forms of signal presentation are shown: two-dimensional frequency spectrum, three-dimensional spectral temporal mapping.

The third form, recently developed, based on the wevelet transform have also been mentioned.

In this paper the experience of different investigators has been listed and their clinical results in identification of patients prone to ventricular tachycardia have also been presented.

Key words: high resolution ECG, frequency domain, signal processing.