Reproducibility of signal averaged ECG analysis by spectral turbulence analysis

Author

Vado, A. ; Ugliengo, G. ; Bruna, C. ; Rossetti, G. ; Uslenghi, E.

Author_Institution

Dept. of Cardiology, S. Croce Hospital, Cuneo, Italy

fYear

1993

fDate

5-8 Sep 1993

Firstpage

431

Lastpage

433

Abstract

Spectral turbulence analysis (STA) is a new technique that evaluates the changes in wavefront velocity of the entire QRS complex of the signal-averaged ECG (SAECG). STA is applied to a region of interest of SAECG that begins 25 msec before the QRS onset (T1) and terminates 125 msec after the QRS offset (T2). This study investigates the reproducibility of the STA in 20 patients with prior myocardial infarction. STA was calculated by method described by Kelen et al. (1991), changing T1 and T2 from -10 msec to +10 msec., respectively. Results: among the four considered parameters, only interslice correlation standard deviation did not show reproducibility. Conclusion: STA resulted in high reproducibility over a wide span of region of interest, the determination of QRS onset and offset not appearing crucial in three of four parameters analyzed by STA of the SAECG

Keywords

electrocardiography; medical signal processing; spectral analysis; 10 to 125 ms; QRS offset; QRS onset; interslice correlation standard deviation; prior myocardial infarction patients; signal averaged ECG analysis reproducibility; spectral turbulence analysis; wavefront velocity changes; Algorithm design and analysis; Electrocardiography; Frequency domain analysis; Myocardium; Reproducibility of results; Signal analysis; Signal processing; Signal resolution; Spectral analysis; Time domain analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Computers in Cardiology 1993, Proceedings.

Conference_Location

London

Print_ISBN

0-8186-5470-8

Type

conf

DOI

10.1109/CIC.1993.378411

Filename

378411