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Poly-Spectrum-QT

Q-T interval dispersion analysis software


poly-spectrum-qt (high resolution).zip
(pdf-file, 12.29 MB)

poly-spectrum-qt.zip
(pdf-file, 846 KB)


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Results of automatic Q-T dispersion analysis

Recent clinical studies have suggested that the interlead variability of the QT interval in the standard ECG, defined as QT dispersion, reflects regional differences in ventricular repolarization. Increased dispersion of recovery time is believed to increase the risk for serious ventricular arrhythmias.

The results of population-based Rotterdam Study completed in 1998 showed that the increased QT dispersion, established by computer analysis, was associated with a higher risk for total mortality, cardiac death, sudden cardiac death, and nonfatal cardiac disease in a large nonhospitalized population of older adults.

In this study the population consisted of 2358 men and 3454 women. The degree of QT dispersion was categorized into tertiles. In particular, the study results demonstrated that for QT dispersion in 8 leads, those in the highest tertile relative to the lowest tertile had a twofold risk for cardiac death and sudden cardiac death and a 40% increased risk for total mortality.

Nowadays the study of the Q-T interval dispersion analysis is used for examination of patients with cardiovascular diseases by physicians all over the word. We would like to offer you such a splendid opportunity too. Poly-Spectrum-QT is an excellent instrumental implementation. It can operate with Poly-Spectrum-12/E, Poly-Spectrum-8/E and Poly-Spectrum-8/EX ECG systems, also produced by our company.


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Updated 27.04.2009
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