QT interval

The QT interval is a crucial measurement on an electrocardiogram (ECG) that represents the time taken for the heart’s ventricles to depolarize and then repolarize, essentially covering the electrical activity associated with a single heartbeat. Monitoring the QT interval helps in assessing cardiac health, identifying potential arrhythmias, and guiding treatment decisions. Abnormal QT intervals can indicate risks for serious heart conditions, making this an important concept in cardiology and medical diagnostics.