Corrected QT Time (QTc)
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QTc (Bazett)
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RR interval
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Heart rate
Primary formula:
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Calculation:
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Interpretation:
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| Formula | QTc (ms) |
|---|---|
| Bazett | - |
| Fridericia | - |
| Framingham | - |
| Hodges | - |
Formulas
- Bazett: QTc = QT / (RR / 1000)^1/2
- Fridericia: QTc = QT / (RR / 1000)^1/3
- Framingham: QTc = QT + 0.154 x (1000 - RR)
- Hodges: QTc = QT + 1.75 x (60000 / RR - 60)
This calculator is a clinical aid and does not replace medical judgment.