Also known as: QT segment prolonged / Prolongation of the QTc interval / Increased QTc interval / Electrocardiogram QT corrected interval prolongation / QT-interval prolongation / Prolonged QTc Interval / ECG QT prolonged / Prolonged QT Interval / Electrocardiogram QT prolongation / QTc prolongation / Prolongation of QTc interval / QTc interval prolongation / QT interval increase / QT interval prolonged / QT-prolongation / QT prolongation / EKG-QT Prolongation / Prolonged QT / Prolongation of QT / Prolongation of QT interval / QT Interval Prolongation / QT prolonged / Electrocardiogram QT prolonged / Electrocardiogram QT corrected interval prolonged / Long QT / QT increased / Prolonged QT interval (finding)