Functional condition of the cardiovascular system in children who have had a new coronavirus infection

BACKGROUND: It is known that in March 2020, a new coronavirus infectious disease that spread across the continent received the status of a pandemic. It has already been established that the new coronavirus infection has features not only in the acute period, but also much later after its expiration.

AIM: to study some functional parameters of the cardiovascular system in children who have suffered a new coronavirus infection, depending on the presence of subjective manifestations.

MATERIALS AND METHODS: We examined 84 children with a history of a new coronavirus infection aged 7 to 17 years. The average age is 11.57 ± 0.46 years. The children were divided into groups 1 (it is a group without subjective manifestations (without complains in time firstable examination) and 2 (with subjective manifestations (with complains)). To identify functional disorders, pulse oximetry, load tests of Shtange and Genchi and bicycle ergometry, electrocardiogram of rest and with load, Holter monitoring were performed for all children.

RESULTS: In the groups of children who underwent new coronavirus infection, a significant decrease in respiratory retention was found during the Shtange’s and Genchi’s tests, physical performance and maximum oxygen consumption in patients with subjective manifestations., an increase in the frequency of cardiac arrhythmias in comparison with the resting electrocardiogram before the infection. Ventricular extrasystole was also detected during Holter monitoring in 2 (2,4 %) children.

CONCLUSIONS: Functional disorders were revealed in all examined children who had a new coronavirus infection in the form of a significant decrease in respiratory retention in the Shtange’s and Genchi’s samples, bicycle ergometry indicators and the appearance of some cardiac arrhythmias, more pronounced in the group of patients with subjective manifestations.