corrected QT interval

The corrected QT interval (QTc) is a heart rate-adjusted measure of the QT interval on an electrocardiogram (ECG), used to evaluate the risk of arrhythmias. It is calculated using various formulas, with Bazett's formula being one of the most commonly employed methods, to account for the influence of heart rate on the QT interval. QTc is particularly important for clinicians monitoring patients for potential cardiac issues, especially those on medications known to affect the QT interval.