Corrected QTc Interval Calculator (Bazett & Fridericia)
Electrophysiology audit. Bazett overcorrects at high heart rates. Fridericia (cube root) is current standard in clinical trials and extremes of HR.
Input Parameters
Instant Calculation Result
Adjust values on the left to calculate live results.
In-Depth Guide & Mathematical Methodology
📈 Clinical QTc Reference Thresholds
Normal QTc: Men < 450 ms, Women < 460 ms.
Borderline QTc: 450-470 ms (men), 460-480 ms (women).
Prolonged QTc (> 470/480 ms): Increased risk of ventricular arrhythmias.
Critical Threshold (> 500 ms): High risk of Torsades de Pointes. Discontinue QT-prolonging drugs immediately.
Frequently Asked Questions (FAQ)
What is the Corrected QTc Interval Calculator (Bazett & Fridericia) and how does it work?
Electrophysiology audit. Bazett overcorrects at high heart rates. Fridericia (cube root) is current standard in clinical trials and extremes of HR.
How do I use this Corrected QTc Interval Calculator (Bazett & Fridericia)?
Enter measured QT interval from ECG in milliseconds (ms). Enter Heart Rate in beats per minute (bpm). Review QTc values by Bazett and Fridericia and arrhythmia risk alert.
What mathematical formula is used in this calculation?
Bazett: QTc = QT / √(RR in sec). Fridericia: QTc = QT / ∛(RR in sec). RR = 60 / Heart Rate.
Is the Corrected QTc Interval Calculator (Bazett & Fridericia) on FindCalculator free to use?
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