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During the congress, E-Posters will be accessible to all participants on the congress website 24/7, as well as in the E-poster stations in the congress center.
Preparing your E-Poster
Please review the E-Poster format requirements carefully when preparing your E-Poster. Should your E-Poster not meet the mentioned requirements, it may not be displayed as described above.
E-Poster Submission Deadline
Please prepare and upload your E-Poster no later than March 14, 2026 11.59PM CET. After this date, you will no longer be able to prepare and upload your E-poster and it will not be displayed and accessible on the congress website.
Please follow the instructions below to input your abstract title.
Abstract titles should be brief and reflect the content of the abstract.
Background: Kidney transplant recipients represent a population at increased risk for COVID-19–related complications. However, the long-term effects of SARS-CoV-2 infection on cardiovascular outcomes in this group remain poorly understood.
Objective: To assess the association between prior COVID-19 infection and the occurrence of cardiovascular events in kidney transplant recipients in 60 months follow-up.
Methods: This retrospective, observational, case-control study included 486 kidney transplant patients followed at two Brazilian hospitals. Participants were divided into two groups: cases (with confirmed previous COVID-19 infection) and controls (without infection history), with 243 individuals in each group. Clinical variables, incidence of cardiovascular events (acute myocardial infarction, stroke, angina, arrhythmia, thrombosis, hospitalization for heart failure), cardiovascular mortality, and combined outcomes (MACE) in different compositions (3-, 4-, and 5-point) were compared using odds ratio (OR) and 95% confidence interval (95% CI) analyses.
Results: A total of 486 patients were included, equally distributed between cases (n=243) and controls (n=243). The median age at transplantation was 40 (28–50) years, similar between the groups (p=0.973). Most participants were male (59.3% in both groups, p=1.000) and white (82.7% cases and 84.3% controls, p=0.880). Most donors were deceased (73%). The frequency of hypertension (77.7% cases and 79.0% controls; p=0.741), diabetes mellitus (11.9% cases and 14.8% controls; p=0.424) and retransplantation (14.8% cases and 10.7% controls; p=0.221) was high. No significant differences were found between cases and controls regarding isolated cardiovascular events or composite outcomes (MACE). However, when stratified by COVID-19 severity, hospitalization due to SARS-CoV-2 infection was significantly associated with worse composite cardiovascular outcomes (HR 12.9; 95% CI: 5.07–32.9; p < 0.001), as well as with diabetes (HR 2.09; 95% CI: 1.14–3.83; p = 0.017). Kidney graft survival was lower in severe cases (64.8%) compared with non-severe cases (88.7%) and controls (85.9%; p = 0.004). In multivariate analysis, hospitalization remained independently associated with reduced graft survival (HR 2.39; 95% CI: 1.37–4.19; p = 0.002), adjusted for age, gender, hypertension and diabetes.
Conclusions: SARS-CoV-2 infection was not associated with increased cardiovascular mortality or MACE among kidney transplant recipients in long term analysis. However, COVID-19 severity was significantly related to poorer composite cardiovascular outcomes and decreased kidney graft survival in 60 months.
