Clinical Manuals

Calculate corrected QT interval (QTc interval)

For details, refer to the chapter QT Duration and Corrected QT Interval.

QTc Calculator

CorrectionEquation
BazzetQTc = QT interval / √ (RR interval)
FridericiaQTc = QT interval / (RR interval)1/3
Framingham Heart StudyQTc = QT interval + 154 x (1 – RR interval)
HodgesQTc = QT interval + 1.75 x [(60 / RR interval) − 60]
Equations for correction of QT intervall.

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