Criteria for short QT interval based on a new QT-heart rate adjustment formula

BACKGROUND: A short QT interval, within which an increased risk for atrial fibrillation and/or fatal cardiac arrhythmias occurs, has been difficult to define. METHODS: The lower percentiles of a new QTc formula were determined, using a precise mathematical fitting of the QT-heart rate relationship f...

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Detalles Bibliográficos
Autor principal: Rabkin, Simon W.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2017
Materias:
Rapid Communication
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5634756/
https://www.ncbi.nlm.nih.gov/pubmed/29021866
http://dx.doi.org/10.1016/j.joa.2017.04.004
Descripción
Sumario:BACKGROUND: A short QT interval, within which an increased risk for atrial fibrillation and/or fatal cardiac arrhythmias occurs, has been difficult to define. METHODS: The lower percentiles of a new QTc formula were determined, using a precise mathematical fitting of the QT-heart rate relationship from the ECGs of 13,600 individuals from the NHANES II and III surveys. RESULTS: The QTc interval for persons in the lower fifth percentile, second (2.5th) percentile and first percentile, were calculated. CONCLUSIONS: Based on the new spline formula, a short QTc is defined at the first percentile, and is less than 380 ms in both men and women.

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