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

作者信息

Shkolnikova M A, Podshivalova O Y, Kalinin L A, Ildarova R A, Kovalev I A, Shkolnikov V M

机构信息

1Moscow Research Institute of Pediatrics and Pediatric Surgery N.I. Pirogov Russian National Research State Medical University, Moscow, Russia; 2Centre for Demographic Research at theNew Economic School, Moscow, Russia.

出版信息

Kardiologiia. 2016 May;56(5):51-55. doi: 10.18565/cardio.2016.5.51-55.

DOI:10.18565/cardio.2016.5.51-55

PMID:28294874

Abstract

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. The analysis demonstrated that neither formula enabled complete exclusion of the correlation between QT and RR intervals. Among existing formulas, Bazett formula provided maximum possible elimination of the HR influence on QT duration. Modified Bazett formula, developed by us, provided even less correlation of QT and RR intervals. Therefore, we recommend implementing modified Bazett formula to pediatric practice.

摘要