Relation between QT and RR intervals is highly individual among healthy subjects: implications for heart rate correction of the QT interval

• Published in: Heart (British Cardiac Society) Vol. 87; no. 3; pp. 220 - 228
• Main Authors: Malik, M, Färbom, P, Batchvarov, V, Hnatkova, K, Camm, A J
• Format: Journal Article
• Language: English
• Published: London BMJ Publishing Group Ltd and British Cardiovascular Society 01.03.2002; BMJ; BMJ Publishing Group Ltd; BMJ Publishing Group LTD; Copyright 2002 by Heart
• Subjects: Adult; Algorithms; Arrhythmia; Biological and medical sciences; Cardiac arrhythmia; Cardiovascular Medicine; Care and treatment; Data processing; Electrocardiography; Electrocardiography, Ambulatory; Female; Fundamental and applied biological sciences. Psychology; Health Status; Heart; Heart beat; Heart rate; Heart Rate - physiology; heart rate correction; Humans; intersubject variability; Male; Measurement; Middle Aged; QT/RR relation; QTc interval; Regression Analysis; repolarisation; Studies; Tachycardia; Vertebrates: cardiovascular system; United Kingdom; Heart; Human; RR interval; Heart rate; Electrodiagnosis; QT interval; Electrocardiography; Electrophysiology; Circulatory system; Age

Objective: To compare the QT/RR relation in healthy subjects in order to investigate the differences in optimum heart rate correction of the QT interval. Methods: 50 healthy volunteers (25 women, mean age 33.6 (9.5) years, range 19–59 years) took part. Each subject underwent serial 12 lead electroca...