MEASUREMENT OF QRS AND QTC DURATION AND DISPERSION PREDICTS VENTRICULAR ARRHYTHMIAS IN THE EARLY STAGE OF ACUTE MYOCARDIAL INFRACTION

Volume 11 , Issue 3 , September 2021 , Pages 309-316

Authors

Farman J. Ahmed 1 ; Aram J. Mirza 2 ; Hemn H. Mohammad 1 ; Amar Talib Al-Hamdi 3

1 Department of Cardiology, Sulaimaniyah Teaching Hospital, Interventional Cardiology Center, Kurdistan Region, Iraq.

2 Sulaimaniyah Teaching Hospital, Mistry of Health, Kurdistan Region, Iraq.

3 Sulaimanyah, Kurdistan Region, Iraq.

DOI logo 10.17656/jsmc.10315

Keywords

Abstract

Background
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.
Objectives
To determine the relationship between QRS and QTc duration and dispersion with the occurrence of
ventriculricular arrhythmia in early stage of myocardial infarction.
Methods
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.
Results
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.
Conclusion
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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  • Published at21 September 2021

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