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sci.ECG-QTc-Bazett-Fridericia Calculator
Calculates QTc (corrected QT interval) using Bazett (QTc = QT/√RR), Fridericia (QTc = QT/RR^0.333), and Framingham formulas. Normal QTc < 440 ms in men, < 460 ms in women — QTc > 500 ms carries significant risk of torsades de pointes ventricular arrhythmia.
Inputs
Qt Ms
Reference formula or conversion factor shown for context.
Rr Ms
Reference formula or conversion factor shown for context.
Results
QTc Bazett (ms)
Reference formula or conversion factor shown for context.
QTc Fridericia (ms)
Reference formula or conversion factor shown for context.
QTc Framingham (ms)
10-year cardiovascular risk estimated using the Framingham Heart Study model. Below 10%: low. 10-20%: moderate. Above 20%: high — medication is usually recommended.