The Corrected QT Interval (QTc) adjusts the QT interval correctly for heart rate extremes.

Valeurs usuelles: QTc ≤ 440ms chez un homme, QTc ≤ 450ms chez un femme. La formule de Bazett, plus ancienne, peut donner des résultats erronés en cas de fréquence haute ou basse. L'American Heart Association recommande la formule de Framingham.

This online evidence based resource will help guide you how to measure the QT interval and calculate the QTc value with an easy to use calculator which takes into account the patients underlying rhythm, gender and age.

2025年3月17日 · Quickly calculate the corrected QT interval by just entering the QT interval duration and the heart rate.

2019年11月18日 · Le calcul du QTc permet de comparer la durée de la dépolarisation-repolarisation entre un individu et un groupe d’individus ou celle d’un individu à deux instants …

2025年1月18日 · One of the earliest and most widely used correction methods, Bazett’s formula calculates QTc by dividing the QT interval by the square root of the RR interval (the time between two successive R-wave peaks). However, it tends to overcorrect at high heart rates and undercorrect at low heart rates, potentially leading to inaccuracies.

This QTc calculator estimates the corrected QT interval expressed in seconds or milliseconds and based on patient’s heart rate in beats per minute.

In this calculator you can enter your measured QT-interval, RR-interval or heart rate, the method you used for the QT-interval measurement (tangent or threshold method), as well as the age and sex of your patient.

The QT c calculator is designed to compute the corrected QT interval, which is an estimation of the QT interval when a heart is beating at a rate of 60 bpm. Determining the corrected QT interval can allow practitioners to compare QT values over time at a variety of heart rates.

Calculate the corrected QT Interval using our free online QTC Calculator. QT interval is a measure of the time taken for the heart muscle to depolarize and then repolarize, representing electrical systole. It is a significant parameter in electrocardiography (ECG) studies.