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33rd International Congress on Electrocardiology

International Society of Electrocardiology

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Correlation Of Results Of Coronarographic, Spect Examination And High Signal Resolution Electrocardiography

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  • corresponding author presenting/speaker R. Krzyminiewski - Adam Mickiewicz University, Poznan, Polen
  • R. Stepien - Ministry of Internal Affairs, Poznan, Polen

33rd International Congress on Electrocardiology. Cologne, 28.06.-01.07.2006. Düsseldorf, Köln: German Medical Science; 2007. Doc06ice017

The electronic version of this article is the complete one and can be found online at: http://www.egms.de/en/meetings/ice2006/06ice017.shtml

Published: February 8, 2007

© 2007 Krzyminiewski et al.
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Question: In view of the high rate of ischemia disease early diagnosis and identification of patients requiring coronarography and/or surgical treatment is of great importance.

Method Used: We proposed a computer method based on Fourier and linear transformation of ECG records, called NURSE-ECG, which increases resolution of the QRS complex. The high-resolution vectorcardiogram (HRVEC) proposed in this work combines the records from particular electrodes, each of computer enhanced resolution. HRVEC provides an opportunity to detect even relatively small changes in electric activity of particular segments of the cardiac muscle. In order to perform quantitative analysis the heart muscle were divided into particular segments.

Results: The correct HRVEC and standard activities of cardiac muscle segments were calculated. The quantitative analyses of HRVEC records of people with ischemia were done. The results obtained for people subjected to coronarography show a good correlation between the occurrence of significant narrowing of a given coronary artery and a decrease in the electric activity of the cardiac muscle fragment. The specificity (SP=76%), and sensitivity (SE=86) of the HRVEC method were determined. A similarly good correlation was obtained between the results of SPECT examination and the decrease in electric activity of the cardiac muscle fragments observed by the HRVEC method (SE=96%, SP =92%).

Conclusion: Preliminary analysis of the sensitivity and specificity of the high-resolution vectorcardiogram in IHD diagnostics has proved the method much promising in the diagnostic of ischemia disease.