Clinical manifestations of cardiovascular disease in children as a sequela of coronavirus disease (COVID-19) (a clinical case)

The aim of the work: to provide medical practitioners with a clinical case of cardiovascular affection with ST-segment elevation in a child as a result of coronavirus disease (COVID-19). Materials and methods. Here is a clinical case of our own observation of the clinical course of post-COVID cardiovascular system involvement with ST-segment elevation in the child who was treated at the City Children’s Hospital No. 5 of Zaporizhzhia City Council. Results. The patient with severe post-COVID cardiovascular implication, COVID in anamnesis confirmed by COVID-19 IgG positivity with negative IgM and PCR test results. The following laboratory findings were also detected when the child was admitted to the hospital: Troponin I was 136 ƞg /ml (referent value – less than 0.32 ƞg/ml), Lactate Dehydrogenase – 4199 U/l (referent value – 110–295), Creatine Phosphokinase-MB – 25.4 U/l (referent value – 0–24), CRP was increased to 6.2 mg/l, D-dimer – to 3221.12 ng/mL (referent value – less than 500 ng/mL). ECG showed QS-waves in leads V3–V6, I, 2.0–2.5 mm ST-segment elevation in leads V4–V6, and Р-mitrale. The clinical course was characterized by cardiogenic shock development. During intensive care, there was moderate positive clinical and laboratory dynamics. Peculiarities of post-COVID myocarditis in children were characterized based on the comparative analysis of this clinical case and results of relevant clinical studies, world recommendations and guidelines. Conclusions. Peculiarity of the case is severe post-COVID syndrome after almost asymptomatic COVID-19. Physicians should be aware after coronavirus disease while providing a close follow-up for six months. Myocardial ischemia is among casuistic post-COVID manifestations in children. The basic treatment is a complex therapy of heart failure, anticoagulant and antiplatelet therapy, as well as corticosteroids administration, which is pathogenetically justified and leads to regression of major clinical and laboratory symptoms.