QT-Dispersion as a potential marker in prognosis of acute myocardial infarction

AUTHORS

Sargiz Yosefian 1 , Hossein Farshidi 2 , * , Manoucher Sobhani 3 , Shafei Rahimi 4

1 Assistant Professor, Hormozgan University of Medical Sciences, Bandar Abbas, Iran.

2 Associate Professor, Hormozgan University of Medical Sciences, Bandar Abbas, Iran.

3 Department of Internal Medicine, Cardiologist, Hormozgan University of Medical Sciences, Bandar Abbas, Iran.

4 General Practitioner, Hormozgan University of Medical Sciences, Bandar Abbas, Iran.

How to Cite: Yosefian S, Farshidi H, Sobhani M, Rahimi S . QT-Dispersion as a potential marker in prognosis of acute myocardial infarction, Hormozgan Med J. 2009 ; 12(4):e88978.

ARTICLE INFORMATION

Hormozgan Medical Journal: 12 (4); e88978
Published Online: July 20, 2008
Article Type: Research Article
Received: December 01, 2007
Accepted: July 20, 2008

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Abstract

ventricular repolarization. The prolongation of QT-interval dispersion increases
the risk of coronary heart disease, ventricular arrhythmia, and sudden cardiac
death in patients with myocardial infarction. We aimed to investigate the
prognostic value of QT-dispersion in patients with acute myocardial infarction.
Methods: A total number of 79 patients with acute myocardial infarction and 21
healthy controls were recruited. The QT-dispersion was estimated using a 12-lead
surface electrocardiogram, 24 hours and 4-6 days after myocardial infarction.
Results: In patient group, the average QT-dispersion was 92.8±42.2 ms and
80.3±33.4 ms after 24 hours and four days respectively; whereas in control group it
was 47.1±16.8 ms (p<0.001). The relative frequency of arrhythmia in patients was
24%. Our study showed that the average of QT- dispersion of arrhythmia in
patients was significantly different and higher (p<0.05) compared to patients
without arrhythmia.
Conclusion: We showed that increased QT-dispersion is a potential marker in
prognosis of patients with acute myocardial infarction.

Keywords

QT-Dispersion - Arrhythmia - Myocardial Infarction

© 2009, Hormozgan Medical Journal. This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/) which permits copy and redistribute the material just in noncommercial usages, provided the original work is properly cited.

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