Why the study?
What is the measurement error in automated determination of QT dispersion from 12-lead electrocardiograms?
Population
1220 standard simultaneous 12 lead electrocardiograms
Comparison
Computer program for automated measurement of QT… vs Two human observers
Design
Other
Authors
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Large, amplitude-dependent errors question QT dispersion reliability; challenges clinical use and leaves open need for validated algorithms.
What is the measurement error in automated determination of QT dispersion from 12-lead electrocardiograms?
Measurement error in QT dispersion is highly dependent on ST-T amplitude and is large compared to typical reported QTD values, questioning its clinical reliability.
Kors et al. (1998) studied this question.
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