Background:Systemic lupus erythematosus (SLE) is a chronic, inflammatory, and autoimmune disease that damages vital organs such as the heart. Patients with SLE have a higher risk of developing a cardiovascular (CV) disease than the general population (1).Objectives:The aim of this study was to compare the echocardiographic findings in patients with SLE and controls.Methods:This was a cross-sectional, observational, and comparative study. A total of 38 patients with SLE according to the 2019 EULAR/ACR classification criteria, ≥18 years old and 38 matched controls by age (±5 years) and gender, were recruited for this study. Exclusion criteria were a poor echocardiographic window, patients with a previous CV event, such as myocardial infarction, cerebrovascular event or peripheral arterial disease, and pregnant women. A transthoracic echocardiogram, including speckle tracking technique, was performed, by two certified echocardiographers, in all study subjects. Distribution was evaluated with Kolmogorov-Smirnov test. Comparisons were done with χ2 and Fisher´s Exact test for qualitative variables, and Student’s t test and Mann-Whitney´s U test for quantitative variables. A p-value Results:When comparing demographic characteristics there were no significant differences in age, gender, and comorbidities between SLE patients and controls. In the echocardiographic findings a significant difference was found in the left ventricular ejection fraction (LVEF), lower in SLE patients compared to controls (57.02% vs 61.89%, p=0.001), in the global longitudinal strain (GLS), reduced in SLE patients (-19.55% vs -22.00%, p=0.001), in the tricuspid annular plane systolic excursion (TAPSE), lower in SLE patients (22.00mm vs 24.00mm, p=0.011), in the left atrial volume index, higher in SLE patients (28.44ml/m2 vs 22.29ml/m2, p=0.014) and in the presence of mitral regurgitation, more prevalent in SLE patients (31.6% vs 10.5%, p=0.024) (Table 1).Conclusion:Patients with SLE have a worse left ventricular function, evaluated by LVEF and GLS, a worse right ventricular systolic function, evaluated by TAPSE, an increased left atrial volume index and a higher prevalence of mitral regurgitation, which are associated with a higher risk of CV death. It is important to consider including a transthoracic echocardiogram as part of the CV evaluation in patients with SLE, which may result in an early detection of CV abnormalities and an opportune treatment.References:[1]Avina-Zubieta JA, To F, Vostretsova K, et al. Risk of Myocardial Infarction and Stroke in Newly Diagnosed Systemic Lupus Erythematosus: A General Population-Based Study. Arthritis Care Res (Hoboken) 2017;69(6):849-56. doi: 10.1002/acr.23018Table 1.Demographic characteristics and echocardiographic findings.SLE patients(n=38)Controls(n=38)pAge years, median (p25-p75)37.5 (24.5-43.2)45.0 (24.0-50.0)NSWomen, n (%)34 (89.5)37 (97.4)NST2DM, n (%)1 (2.6)3 (7.9)NSHTN, n (%)9 (23.7)3 (7.9)NSDyslipidemia, n (%)3 (7.9)3 (7.9)NSObesity, n (%)1 (2.6)5 (13.2)NSActive smoking, n (%)7 (18.4)3 (7.9)NSEchocardiographic findingsLeft ventricle indexed mass g/m2, median (p25-p75)64.00 (50.66-87.09)60.30 (52.97-76.74)0.009RWT, median (p25-p75)0.37 (0.30-0.46)0.38 (0.33-0.45)NSLeft ventricular ejection fraction %, mean ± SD57.02 ± 7.3761.89 ± 5.230.001Global longitudinal strain %, median (p25-p75)-19.55 (-21.02 –-15.95)-22.00 (-21.00 –-20.00)0.001Left atrium indexed volume ml/m2, median (p25-p75)28.44 (20.34-33.56)22.29 (17.97-27.13)0.014TAPSE mm, median (p25-p75)22.00 (20.00-24.00)24.00 (21.00-25.00)0.011Valvular abnormalitiesAortic regurgitation, n (%)2 (5.3)1 (2.6)NSMitral regurgitation, n (%)12 (31.6)4 (10.5)0.024Tricuspid regurgitation, n (%)16 (42.1)17 (44.7)NSSLE, systemic lupus erythematosus; NS, not significant; T2DM, type 2 diabetes mellitus; HTN, hypertension; RWT, relative wall thickness; TAPSE, tricuspid annular plane systolic excursion.Acknowledgements:We have no acknowledgements to declare.Disclosure of Interests:None declared