Cardiology · Emergency Medicine
Corrected QT Interval (Fridericia) calculator
Enter the published formula inputs below to calculate and interpret this score.
Clinical inputs
Result
Complete all required inputs to calculate the score.
Formula inputs
- QT interval (ms)Accepted range: 200 to 700
- Heart rate (/min)Accepted range: 30 to 220
Primary source
Fridericia LS. Die Systolendauer im Elektrokardiogramm bei normalen Menschen und bei Herzkranken. Acta Med Scand. DOI: 10.1111/j.0954-6820.1920.tb00164.x. PMID: 18659245. Scope: Fridericia correction QTc = QT / RR^(1/3) with RR in seconds. (1920)
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