The COVID-19 pandemic has significantly affected not only adults but also children, leading to long-term complications in various organ systems, including the cardiovascular system. This study aims to analyze anatomical and functional changes in the cardiovascular system of children who have recovered from COVID-19. Echocardiographic, electrocardiographic, and biochemical parameters were assessed to determine myocardial involvement, vascular reactivity, and cardiac function. The results indicate that post-COVID-19 children may develop subclinical myocarditis, endothelial dysfunction, and decreased heart rate variability, suggesting a persistent impact on cardiovascular health. Continuous monitoring and early rehabilitation are recommended to prevent long-term consequences.

COVID-19, children, cardiovascular system, myocarditis, endothelial dysfunction, heart function.

Matsubara, D., Kauffman, H. L., Wang, Y., et al. (2022). Echocardiographic findings in pediatric patients after COVID-19 infection and MIS-C. Journal of the American Society of Echocardiography, 35(2), 204–213.

Rajpal, S., Tong, M. S., Borchers, J., et al. (2021). Cardiovascular magnetic resonance findings in competitive athletes recovering from COVID-19 infection. JAMA Cardiology, 6(1), 116–118.

Puntmann, V. O., Carerj, M. L., Wieters, I., et al. (2020). Outcomes of cardiovascular magnetic resonance imaging in patients recently recovered from COVID-19. JAMA Cardiology, 5(11), 1265–1273.

Buonsenso, D., Munblit, D., De Rose, C., et al. (2023). Long-term cardiovascular effects of SARS-CoV-2 infection in children: A systematic review. Frontiers in Pediatrics, 11, 1089453.

Feldstein, L. R., Tenforde, M. W., Friedman, K. G., et al. (2021). Multisystem inflammatory syndrome in U.S. children and adolescents. New England Journal of Medicine, 385(9), 834–845.