E- ISSN: 2822-4051
Journal of Tepecik Education and Research Hospital
Comparison of Electrocardiographic Parameters in Young and Middle-aged Patients Presenting with non-ST Myocardial Infarction [Anatol J Med ]
Anatol J Med . 2023; 33(2): 219-225 | DOI: 10.4274/terh.galenos.2022.82335

Comparison of Electrocardiographic Parameters in Young and Middle-aged Patients Presenting with non-ST Myocardial Infarction

Songül Usalp1, Ramazan Gündüz2
1University of Health Sciences Turkey, Sancaktepe Şehit Prof. Dr. İlhan Varank Education and Research Hospital, Clinic of Cardiology, İstanbul, Turkey
2Manisa City Hospital, Clinic of Cardiology, Manisa, Turkey

Objective: In this study, we aimed to examine the relationship between young and middle-aged patients and frontal QRS-T angle (FQRS-T A) by evaluating the demographic, clinical features and electrocardiographics (ECGs) of patients who presented with non-ST elevation myocardial infarction (NSTEMI).
Methods: The study was planned retrospectively, and 396 patients, young age (20-45 years, n=158) and middle-aged (46-65 years, n=238) who applied to the emergency department with chest pain and were diagnosed with NSTEMI underwent coronary angiography for the first time. The FQRS-T A is calculated by the frontal plane QRS axis and the T axis (FQRS-T A=QRS-T axis) from a 12-lead plane ECG.
Results: Hypertension (HT) (p<0.001) and diabetes mellitus (DM) (p<0.001), serum glucose (p=0.007), serum high-density lipoprotein cholesterol (HDL-C) level (p=0.005), SYNTAX score (p<0.001) and FQRS-T A (p<0.001) were higher in the middle-aged group. In multivariate analysis showed HT [odds ratio (OR): 4.084, 95% confidence interval (CI) (2.234-7.465), p<0.001], DM [OR: 1.452,95% CI (1.288-7.465), p=0.018], low HDL-C level [OR: 0.972, 95% CI (0.951-0.994), p=0.012], FQRS-T A [OR: 0.990, 95% CI (0.980-0.993), p<0.001], was determined as a possible independent risk factor for NSTEMI in middle-aged patients group. Analyzes showed that the optimal cut-off value for the degree of FQRS-T A to predict a middle-aged NSTEMI was >32.5%, with a sensitivity of 62% and a specificity of 52% (area under the curve: 0.633, 95% CI 0.579-0.687, p<0.001).
Conclusion: In our study, FQRS-T A was found to be higher in middle-aged NSTEMI patients, and it was found to be a possible independent risk factor for NSTEMI.

Keywords: Frontal QRS-T angle, non-ST segment elevation myocardial infarction, electrocardiography

Songül Usalp, Ramazan Gündüz. Comparison of Electrocardiographic Parameters in Young and Middle-aged Patients Presenting with non-ST Myocardial Infarction. Anatol J Med . 2023; 33(2): 219-225

Corresponding Author: Songül Usalp, Türkiye
Manuscript Language: English
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