Rediscovering Clinical Utility of QT Dispersion: A Long-Forgotten Parameter

Denny Suwanto 1 2 * , Ivana Purnama Dewi 1 2 3 * , Budi Baktijasa Dharmadjati 1 2
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1 Faculty of Medicine, Airlangga University, Surabaya, Indonesia
2 Cardiology and Vascular Medicine Department, Dr. Soetomo General Hospital, Surabaya, Indonesia
3 Faculty of Medicine, Duta Wacana Christian University, Yogyakarta, Indonesia
* Corresponding Author
J CLIN MED KAZ, Volume 18, Issue 3, pp. 4-7.
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Clinical and experimental electrophysiological studies have shown the importance of inhomogeneous myocardial repolarization in ventricular arrhythmias' genesis. Increased dispersion of repolarisation provides a substrate for ventricular arrhythmias by generating functional unidirectional block areas, thereby predisposing to reentry. QT dispersion, defined as the difference between the longest and the shortest QT interval on the surface ECG, is a validated measure of repolarisation dispersion. QT dispersion predicts sudden death and ventricular arrhythmias in patients with chronic heart failure from coronary heart disease and various cardiac diseases


Suwanto D, Dewi IP, Dharmadjati BB. Rediscovering Clinical Utility of QT Dispersion: A Long-Forgotten Parameter. J CLIN MED KAZ. 2021;18(3):4-7.


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