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ricia and Framingham formulas identified only a small number ( 7) of children with QT interval between 440 and 460 ms and no children with longer QTc. During screening for LQTS in children, the use of Bazett formula leads to a high number of false positive cases especially if the heart rates are increased (e.g. by postural manoeuvring). The use of Fridericia formula can be recommended to replace the Bazett correction not only for adult but also for paediatric ECGs. During screening for LQTS in children, the use of Bazett formula l