Why the study?
Which single ECG lead best estimates the mean Q-T interval in subjects with cardiac diseases?
Population
49 subjects with cardiac diseases
Design
Cross-sectional
Authors
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May support V3 for mean QT estimation in cardiac disease; leaves open prospective validation for dispersion assessment.
Which single ECG lead best estimates the mean Q-T interval in subjects with cardiac diseases?
Lead V3 is the best single lead to estimate the mean Q-T interval, whereas the longest lead Q-T interval reflects Q-T dispersion.
Patrick Davey (2000) studied this question.
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