title: [Search for an Optimal Formula for Calculation of the Corrected QT Interval in Children Based on Data of Clinical-Epidemiological Study].
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.
authors.affiliation: 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.
authors.forename: M A
authors.initials: MA
authors.lastname: Shkolnikova
authors.affiliation: 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.
authors.forename: O Y
authors.initials: OY
authors.lastname: Podshivalova
authors.affiliation: 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.
authors.forename: L A
authors.initials: LA
authors.lastname: Kalinin
authors.affiliation: 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.
authors.forename: R A
authors.initials: RA
authors.lastname: Ildarova
authors.affiliation: 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.
authors.forename: I A
authors.initials: IA
authors.lastname: Kovalev
authors.affiliation: 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.
authors.forename: V M
authors.initials: VM
authors.lastname: Shkolnikov
mesh_terms: D035843:Biomedical Research; D002648:Child; D004562:Electrocardiography; D006339:Heart Rate; D006801:Humans