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

This QTc calculator corrects the QT interval based on its duration on ECG test and the patient’s heart rate.

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.

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

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).

2025年1月14日 · To get your patient’s QTc with our QTc calculator, you need to: Determine the length of the QT interval: Find the beginning of the Q wave (and QRS complex at the same time). Localize the end of the T wave. Measure the distance between these two points on X-axis. You can use a ruler or a caliper.

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.

The calculator will then provide you the QTc-intervals for five established correction formulas (i.e. Bazett, Friderica, Framingham, Hodges and Rautaharju). Based on the correction formula you wish to use the calculator will provide you the probability of LQTS for this specific patient with this specific measured QT-interval.

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

A comparison of commonly used QT correction formulae: the effect of heart rate on the QTc of normal ECGs.