Establishing reference values for heart rate-specific uncorrected QT intervals in newborns may improve the accuracy of diagnosing abnormal QT intervals.
May inform QTc formula selection in neonates; leaves open validation in larger prospective studies.
During the 4 weeks QTcFramingham and QTcHodges showed minor changes, whereas QTcBazett and QTcFridericia were stable. The QT interval was unaffected by sex and infant size and GA only showed an effect in very premature newborns. Reference values for HR-specific uncorrected QT intervals may facilitate a more accurate diagnosis of newborns with abnormal QT intervals.
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Pærregaard et al. (2020) studied this question.
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