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Cardiology

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Corrected QT

Correct QT interval using Bazett, Fridericia, Framingham, Hodges, or Rautaharju formulas.

Useful in the evaluation of patients with syncope.
Important when assessing for QT prolongation in patients receiving multiple QT-prolonging medications.

Correction formula

RR is derived from heart rate as 60 / HR and is expressed in seconds. Formulas: Bazett QT/sqrt(RR), Fridericia QT/cbrt(RR), Framingham QT + 154 x (1 - RR), Hodges QT + 1.75 x (HR - 60), Rautaharju QT x (120 + HR) / 180.

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Note: MedicalC is NOT medical software and does NOT issue diagnoses or treatment recommendations. The calculators are for educational and informational purposes, use published medical formulas, and are not a substitute for medical consultation. Results should be interpreted by professionals.Read the full disclaimer.