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ORIGINAL ARTICLE
Year : 2018  |  Volume : 9  |  Issue : 4  |  Page : 162-164

Value of pathologic Q wave in surface electrocardiography in the prediction of myocardial nonviability: A cardiac magnetic resonance imaging-based study


1 Department of Cardiology, Mashhad University of Medical Sciences, Mashhad, Iran
2 Department of Cardiology, Preventive Cardiovascular Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
3 Department of Cardiology, Shahid Rajaie Cardiovascular, Medical and Research Center, Tehran, Iran
4 Department of Cardiology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran

Correspondence Address:
Dr. Zahra Alizadeh Sani
Shahid Rajaie Cardiovascular Medical and Research Center, Tehran
Iran
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/japtr.JAPTR_345_18

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In surface electrocardiography (ECG), Q wave is often considered as a sign of irreversibly scarred myocardium. Cardiac magnetic resonance (CMR) imaging is an accurate mean for the detection of myocardial viability. Herein, we study the predictive value of Q wave in nonviable (scarred) myocardium by CMR study. Retrospective analysis of the ECG and CMR data of 35 coronary artery disease patients was performed. The delayed enhancement CMR protocol was used for the detection of viability. The presence of a pathologic Q wave in surface ECG was negatively related to myocardial viability with a kappa measurement of agreement of −0.544 and P< 0.0001. Pathologic Q wave in surface ECG can be used as a simple tool for myocardial viability prediction.


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