Frequency of fragmented QRS in patients with acute Non ST elevation Myocardial Infarction (NSTEMI).
Objective: To determine the frequency of fragmented QRS complex in patients with acute non-ST elevation myocardial infarction (NSTEMI). Study Design: Cross-Sectional Study. Setting: Department of Cardiology, Faisalabad Institute of Cardiology, Faisalabad. Period: July 15, 2019 to January 15, 2020. Material & Methods: One hundred and forty five diagnosed patients of NSTEMI on the basis of chest pain and positive troponin-I were included in this study. The electrocardiography (ECG) was performed to document the presence or absence of f QRS complex in these patients. A 12-lead ECG with paper speed of 25 or 50 mm per second and a voltage of 10 mm/mv was used. FQRS was labeled (as per operational definition). The collected data were entered and analyzed statistically by using SPSS v25.0. Data were stratified for age, gender, diabetes, smoking and hypertension. Post-stratification, f QRS complex was compared by Chi-Square test in stratified groups. A p-value ≤0.05 was taken as significant. Results: Total 145 patients presenting with NSTEMI were selected for this study. Mean age of the patients was 48.2±12.3 year. Among these patients, 90(62.1%) were males, while 55(37.9%) were females. Overall frequency of fQRS complex in patients with NSTEMI was 64(44.1%). Conclusion: There is an association of fQRS among patients with acute non-ST elevation myocardial infarction (NSTEMI). Further prospective studies are needed to determine the clinical significance of fQRS complex and identify its correlation with the incidence of possible complications.