[Search for an Optimal Formula for Calculation of the Corrected QT Interval in Children Based on Data of Clinical-Epidemiological Study].

The aim of the study was to compare different types of QT correction, establish age norms of QT duration, and assess associations between QT duration and heart rate (HR) in children. The sample comprised 0-18-year-old children (n=5909) selected from general population. The study examined several existing formulas of corrected QT (Bazett, Fridericia, Framingham, and Hodges) and modified Bazett formula developed for healthy children.