Key result
QT dispersion offers limited clinical utility due to low reliability and widely varying normal values.
Population
Cardiac patients and healthy subjects (general discussion)
Design
Review
Authors
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QT dispersion should not guide clinical decisions; leaves open development of reliable repolarization metrics.
QT dispersion is a crude measure with low reliability, and clinical efforts should be directed toward more robust methods for quantifying repolarization abnormalities.
Malík et al. (2000) conducted a review in Repolarization abnormalities. QT dispersion was evaluated. QT dispersion is a crude measure of repolarization abnormality with low measurement reliability and widely varying reported normal values (10 to 71 ms), limiting its clinical utility.
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