Calculators
QTc (Bazett and Fridericia)
Rate-corrected QT interval: Bazett divides by the square root of RR, Fridericia by its cube root.
Result
Fill the inputs to compute.
- Interpretation
- Compares QT across heart rates; the drug-safety and torsades-risk number.
- Limitations
- Bazett overcorrects at fast rates and undercorrects at slow ones; Fridericia behaves better at rate extremes.
- Reference
- Bazett HC. Heart 1920;7:353-70; Fridericia LS. Acta Med Scand 1920;53:469-86.
Connected