A Study of QT Dispersion as a Prognostic Indicator in Acute Myocardial Infarction

Arif  Wahab; Shaista  Alvi; Raja  B. Panwar; Sunil  Budania

International Cardiovascular Research Journal

The Official Annually Journal of Cardiovascular Research Center, Shiraz University of Medical Sciences

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A Study of QT Dispersion as a Prognostic Indicator in Acute Myocardial Infarction

Author(s):

Arif Wahab^1,*,

Shaista Alvi²,

Raja B. Panwar³,

Sunil Budania¹

1Clinical Registrar, H.R.M.C. Govt. Centre of Cardiology and Cardiovascular Sciences, Bikaner, India

2Clinical Registrar, Deptt. of Internal Medicine, J.N.M.C.H, A.M.U, Aligarh, India

3Director, H.R.M.C. Govt. Centre of Cardiology and Cardiovascular Sciences, Bikaner, India

International Cardiovascular Research Journal:Vol. 6, issue 1; e12824

Published online:Sep 30, 2012

Article type:Research Article

Received:May 17, 2017

Accepted:Feb 17, 2012

How to Cite:Arif WahabShaista AlviRaja B. PanwarSunil BudaniaA Study of QT Dispersion as a Prognostic Indicator in Acute Myocardial Infarction.Int Cardiovasc Res J.6(1):e12824.

Abstract

Background: QT dispersion, defined as the difference between maximum and minimum QT interval measured at 12 lead ECG, is the most simple and widely used index of ventricular dispersion. Increased ventricular dispersion predicts predisposition to cardiac arrhythmia and therefore affects the prognosis of patients after myocardial infarction.

Methods: In this study we evaluated whether QT dispersion can predict the arrhythmogenic potential in acute myocardial infarction (AMI) and whether it can behave as a risk stratification tool in such patients.

Results: In all, 124 patients were included in the study. Mean QT dispersion at presentation was 112±5.4 ms. Those who were thrombolysed, or survived or did not develop significant ventricular arrhythmias had significantly lower QT dispersion than their comparative groups (P<0.001).

Conclusion: In our study we found that measuring QT dispersion from presentation till hospitalisation can provide a method of risk stratification of AMI patients and can detect patients who are at increased risk of developing ventricular arrhythmias and increased cardiac mortality

Keywords

QT Dispersion

Ventricular inhomogenity

Acute Myocardial Infarction.

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