Why the study?
Does beat-to-beat QT dispersion and QT interval variability index analysis identify patients with organic heart disease at risk for ventricular arrhythmias?
Population
86 subjects: 54 with organic heart disease without a history of ventricular arrhythmias, 15 with OHD with…
Comparison
10 min of beat-to-beat 12-lead QT dispersion and… vs Controls and OHD patients without ventricular…
Design
Cross-sectional
Authors
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QT dispersion metrics were associated with ventricular tachycardia; hypothesis-generating for arrhythmia risk stratification, requiring prospective validation.
Does beat-to-beat QT dispersion and QT interval variability index analysis identify patients with organic heart disease at risk for ventricular arrhythmias?
Beat-to-beat fluctuations of QT interval and QT dispersion may serve as markers of temporal electrical instability in patients with organic heart disease.
Galeano et al. (2003) studied this question.
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