The Southern Cheyenne, known in Cheyenne as HeÃ©vÃ¢hetaneo'o meaning Roped People, together with the Southern Arapaho, form the Cheyenne and Arapaho Tribes, in western Oklahoma. Their combined population is 12,130, as of 2008.
In cardiology, the QT interval is a measure of the time between the start of the Q wave and the end of the T wave in the heart's electrical cycle. The QT interval represents electrical depolarization and repolarization of the ventricles. A lengthened QT interval is a marker for the potential of ventricular tachyarrhythmias like torsades de pointes and a risk factor for sudden death.
In this article, Iâll answer these. questions plus show you how to measure. the QT interval and how to recognize the. types of long QT syndrome (LQTS) and. their symptoms, causes, and treatments. The long and short of it. The QT interval on the ECG is measured. from the beginning of the QRS complex to. the end of the T wave (see ECG components). It represents the time it takes. for the ventricles of the heart to. depolarize and repolarize, or to. contract and relax.