Search

Introduction. The article discusses the problem of using cognitive visceral cardiobiofeedback as a preventive and non-drug method for correcting disturbed regulation mechanisms associated with an increase in blood pressure in adolescents with essential hypertension (EH) against the background of standard antihypertensive therapy with enalapril. Aim of the study was to investigate the indices of the cardiointervalogram (CIG) during a biofeedback session and to evaluate the effectiveness of cardiobiofeedback in healthy adolescents and adolescents with EH living in Novosibirsk. Material and methods. Each participant underwent a 5-minute CIG recording using the hardware and software complex VedaPulse under physiological rest and during biofeedback session. In the course of biofeedback, the subject was asked to lengthen the expiration phase of the respiratory cycle with parallel relaxation of muscle tone and visual feedback on the dynamics of a multimedia plot reflecting changes in the duration of the cardiac cycle. Results and discussion. We found that the effectiveness of cardiorespiratory synchronization (CRS) is characterized by an increase in SDNN indicators by 8.3% and the total power of spectral influences (TP) by 23.6% due to a significant increase in the parasympathetic spectral index of HF by 29.4%. An increase in the power index of the spectrum of low-frequency oscillations (LF) by 51.3% can be considered as an element of CRS within 0,1 Hz. In healthy adolescents, the reactivity of the suprasegmental levels of regulation (IC) is preserved and their growth is noted by 7.6%. In adolescents with EH, an increase in the duration of the cardiac cycle by 5.2% and TP by 31.2% was recorded in the course of cardiobiofeedback, which is associated with an increase in the power of the spectrum of high-frequency oscillations (HF) by 2.4%. This phenomenon should be considered as a positive pathophysiological response of the autonomic link of the nervous system, which is recorded by a decrease in blood pressure. Conclusion. We assume that the test with cognitive visceral cardiobiofeedback can serve as an effective marker for the analysis of the rigidity of autonomic mechanisms of regulation in adolescents with essential hypertension. Conscious regulation of the heart rate through the mechanism of controlled respiration (biofeedback) can be an effective non-drug method for correcting autonomic regulation disorders in adolescents with arterial hypertension, which is manifested by a significant decrease in blood pressure.

Each period of childhood is characterized by its own peculiarities of growth and development, the degree of morphological and functional maturity of individual organs and systems, the specifics of physiological and metabolic processes. Rational feeding and nutrition play a significant role in a child’s health. The authors presented modern approaches to the complementary food for children, its timing, taking into account the child’s readiness to receive new food, the composition of the dish, feeding technique, the formation of proper eating habits and behavior. The literature actively discusses the problem of the formation of taste preferences at early age; thisisthe period for the first acquaintance with varioustastes. The article demonstratesthe advantages of using products of industrial production. It is particularly important to overcome the negative attitude to new products – it determinesthe attention of the specialists to the problem of the introduction of complementary foods.Conflict of interest: The authors of this article confirmed the lack of conflict of interest and financial support, which should be reported.

The article presents modern ideas about disorders of hydroionic metabolism in children. Many diseases of different etiologies can lead to the development of disturbances in the exchange of water and ions. Depending on the prevailing losses, the main types of dehydration are identified: isotonic, hypotonic and hypertonic. Approaches to the treatment with the help of enteral and parenteral rehydration aimed at correcting not only dehydration but also microelemental disorders are presented. Basic solutions for oral rehydration (ORS-200, Regidron Bio, Humana Electrolyte), as well as special children’s water for use in medical practice and nutrition are presented. The indications for carrying out the infusion therapy are justified.

Forthe harmonious development of the child at any age, the dietshall be balanced in terms of the proteins, fats and carbohydrates, and it shall include the sufficient amount of the macro- and microelements as well. The micronutrients are necessary for the functioning of all organs and systems, are part of many enzymes, hormones, immune factors. Numerous domestic and foreign studies indicate to the insufficient attention to this problem; that contributesto the development of deficiency conditions. The article considersthe issues associated with the introduction of products of industrial production enriched with the mineral elements in the nutrition of children.