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Early Repolarization and the Severity of Coronary Artery Disease: A Case-control Study
Roholla Hemmati , Yousef Mohsenzadeh , Shirvan Salaminia , Fatemeh Sayehmiri
Department of Cardiac Surgery, Yasuj University of Medical Science, Yasuj, Iran , ssalaminia@yums.ac.ir
Abstract:   (253 Views)
Background: Early repolarization (ER) is a common finding of the routine electrocardiogram (ECG). The ER usually considered a benign ECG finding, nevertheless a controversy. This study conducted to investigate the relationship between early repolarization (ER) and the severity of coronary artery disease in patients with a diagnostic coronary angiography.
Methods: This case-control study included ninety patients (45 patients and 45 control groups) with a diagnostic angiography and conducted in 2015. After obtaining informed consent, patients with angiography for ER considered as cases and those for other reasons as a control. Data analyzed using SPSS software version 16. A p-value lesser than 0.05 was significant.
Results: frequency of ER was higher in men (75.6%), and there was a significant relationship between sex and ER (P =0.003). The mean age of the patients in the ER group was lower than that of non-ER patients, but not statistically significant (P =0.1). Abnormal angiography was more prevalent in patients with ER than non-ER patients (59.6% vs. 40.4%). ER morphology showed a significant correlation to abnormal angiography and also stenosis severity (P =0.035).
Conclusion:  ER was higher in men than in women. There was a significant correlation between the existence of ER morphology and atherosclerosis severity. Screening programs for ER detection may reduce the risk of arrhythmias and prevent related complications.

Keywords: Early Repolarization, coronary artery disease, electrocardiogram, angiography
Type of Study: Original Article | Subject: Cardiology
Received: 2019/02/22 | Accepted: 2020/08/25
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Caspian Journal of Internal Medicine
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