A sophisticated analysis system for performing QT measurements The QT Guard™ analysis system performs sophisticated QT associated measurements on 12-lead ECG. QT Guard can analyze and display any 12-lead ECG initially acquired and analyzed by the GE Medical Systems 12SL™ ECG Analysis Program.
QT dispersion calculated from the 12-lead ECG is defined as the maximum QRS onset to T end interval measured in any lead minus the minimum QRS onset to T end interval measured in any lead. QRS onset to T peak dispersion is also determined in a similar manner using the peak of the T wave rather than the end of the T wave.
By leveraging and building on state of the art ECG analysis and display techniques already employed by other GE Medical Systems ECG analysis programs, the QT Guard analysis system is setting the standard for rapid QT measurements that, unlike manually made measurements, are both stable and more importantly reproducible.
The QT Guard analysis may be performed on single ECGs or on groups of hundreds or thousands of ECGs quickly and efficiently. Post processing capabilities allow for streamlined verification, modification and partitioning of the resulting measurements which are ready for statistical program analysis.
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