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    GlossaryQT interval

    time between heart's electrical depolarization and repolarization phases

    The QT interval is a measurement made on an electrocardiogram (ECG) that represents the time it takes for the heart's ventricles to depolarize and then repolarize, essentially covering the period from the start of the Q wave to the end of the T wave. It is crucial for assessing the electrical activity and health of the heart, as abnormalities in the QT interval can indicate a risk for arrhythmias or other cardiac issues.

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