The Short QTc Is a Marker for the Development of Atrial Flutter and Atrial Fibrillation

A short QT interval has been difficult to define, and there is debate whether it exists outside of an extremely small group of individuals with inherited channelopathies and whether it predicts cardiac arrhythmias. The objective was to identify cases with short QT and their consequences. Our hospita...

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Bibliographic Details
Published in:Cardiology research and practice 2020, Vol.2020 (2020), p.1-8
Main Authors: Rabkin, Simon W., Tang, Jacky K. K.
Format: Article
Language:English
Subjects:
Abnormalities
Age
Arrhythmia
Cardiac arrhythmia
Electrical equipment and supplies industry
Electrocardiogram
Electrocardiography
Heart
Heart beat
Heart rate
Muscle contraction
Mutation
Pacemakers
Population
Software
Women
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Summary:A short QT interval has been difficult to define, and there is debate whether it exists outside of an extremely small group of individuals with inherited channelopathies and whether it predicts cardiac arrhythmias. The objective was to identify cases with short QT and their consequences. Our hospital ECG database was screened for cases with a QTc based on the Bazett formula (QTcBZT) of less than 340 ms. The QTc was recalculated using the spline (QTcRBK) formula, which more accurately adjusts for the heart rate and identifies cases based on percentile distribution of the QT interval. The exclusion criteria were presence of bundle branch block, arrhythmias, or electronic pacemakers. An age- and sex-matched cohort was obtained from individuals with normal QT intervals with the same exclusion criteria. There were 28 cases with a short QTc (QTcRBK 
ISSN:2090-8016
2090-0597
2090-0597
DOI:10.1155/2020/2858149