• Farman J. Ahmed Department of Cardiology, Sulaimani Teaching Hospital, Interventional Cardiology Center, Kurdistan Region, Iraq.
  • Aram J. Mirza Sulaimaniyah Teaching Hospital, Mistry of Health, Kurdistan Region, Iraq.
  • Hemn H. Mohammad Department of Cardiology, Sulaimani Teaching Hospital, Interventional Cardiology Center, Kurdistan Region, Iraq.
  • Amar Talib Al-Hamdi Sulaimani, Kurdistan Region, Iraq.



Measurement of QRS, QTc Duration, Dispersion Predicts Ventricular Arrhythmias, Acute Myocardial Infraction



Myocardial infarction is one of the most common causes of mortality in middle and older age groups, especially in the presence of a ventricular arrhythmia.


To determine the relationship between QRS and QTc duration and dispersion with the occurrence of ventriculricular arrhythmia in early stage of myocardial infarction.


This prospective study of 100 patients (72 males) admitted to Slemani Cardiac Hospital, Sulaimani, Kurdistan Region -Iraq with ST-segment elevation myocardial infarction who underwent primary percutaneous coronary intervention. Electrocardiograms on admission and one day later were evaluated for the duration and dispersion of corrected QT interval (QTc) and QRS.


Mean QTc was 453±35 ms on admission and 440±31.3 ms one day later. Mean QTc dispersion (QTC) was 69±18.4 ms on admission and 49.8±15 ms one day later. Mean QRS duration was 76.8±12.8 ms on admission and 70±10.7 ms one day later, while mean QRS dispersion (d QRS) was 29.4±14.7 ms on admission and 18.8±17.5 ms one day later. There was a significant correlation between ventricular arrhythmia and QRS, dQRS, QTc, and dQTc ≥ 60ms.


Patients with the increased value of corrected QT dispersion, QRS duration, and dispersion in the early stage of STEMI have a greater likelihood of developing ventricular arrhythmia.


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