Introduction: Acute respiratory infections (ARI) are the main cause of morbidity in most countries. The probability of complications and age determine antibiotics administration. Antibiotic associated diarrhea (AAD) is one of the side effects of antibiotics. The aim: The study of the prevalence rate of AAD and the characteristics of its development in children with ARI. Materials and methods: The study included 75 children aged from 1 to 12 y diagnosed with ARI, who were treated with age-specific doses of antibiotics. The influence of children’s anamnesis, parents’ health on the development of AAD was studied with odds ratio calculation (OR). Results: In general, AAD incidence was 52%. The highest frequency 59.3% was observed in children under 3 y. AAD most often developed in children treated with amoxicillin – 92%. The greatest dependence of AAD development was connected with breastfeeding less than 6 months – OR was 7.65, preterm birth – 2.9, functional GIT disorders in anamnesis – up to 3.14, allergy – 2.33. The risk of AAD development increased with the age of parents more than 35 y – 5.03, at the age of parents less than 18 and older than 35 y – 4.09, parents’ allergies - 3.74 and parents smoking - 2.43. Conclusions: The most important factors of AAD development on antibiotics therapy in children with ARI are breastfeeding less than 6 months, functional GIT disorders and allergic conditions in anamnesis. Suboptimal age and parents’ health (GIT disorders, allergic conditions and unhealthy habits) also increase the risk of AAD development.

The purpose of this study was to determine serum zinc, iron, magnesium, copper, potassium, calcium, and sodium levels in acute rotavirus infection and convalescence period in children. Materials and methods. We examined 86 patients aged from 4 months to 5 years with clinical and laboratory signs of rotavirus infection. The I group-43 children with RVI in acute period. The II group-43 children with RVI in convalescence period. The control group included 14 healthy children at the same age. The content of macro-and microelements (zinc, iron, magnesium, copper, potassium, calcium and sodium) in blood serum was determined by atomic absorption spectrophotometry. Feces samples were used for Cito Test Rota (Pharmasco). Cito test was used for rotavirus antigen detection in feces. Statistical analysis was performed by Excel. Student's t-test was used to evaluate differences between study groups. Results. The acute period of the disease in children with rotavirus infection was characterized by a significant increase of copper in blood serum compared with the control group. At the same time, a significant decrease of iron, magnesium, zinc, potassium, calcium, sodium were determined in patients with rotavirus infection, compared with apparently healthy children. After standard treatment only the indicators of magnesium, potassium and sodium reached the same indices of control group children. Conclusions. The detected changes in the mineral status of patients with rotavirus infection suggest the need for treatment correction. Correction of micro-and macroelements imbalances in patients with rotavirus infection possibly should be aimed at the metallo-drugs inclusion in complex treatment as well as medicines which improve absorption of the latter in the intestine.

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Introduction: The frequency of births of infants with perinatal pathology has increased inrecent years. The aim of this study is to determination of lead content in the biomedias ofnewborns with hypoxic-ischemic damage of the central nervous system (CNS). Materials andMethods: We studied influence of the lead content in children, which were born with hypoxicischemiclesion CNS (HIL CNS). Determination of this microelement was carried out in theblood serum, erythrocytes and urine of 30 newborn infants which were suffered from asphyxiaafter birth. The comparison group consisted of 30 healthy full-term newborns. Results: In thebiomedias of children with the HIL of the central nervous system, a toxic trace element of leadhas been identified which is poorly retained in the placenta, so the fetus is more vulnerable toits toxic effects in the prenatal period. In the article the features of the lead content in serum,erythrocytes and urine in term infants which were born with hypoxic-ischemic CNS lesions areinvestigated. This group of subjects had increased serum and erythrocyte concentration of lead.The high content of lead in the erythrocytes of children with hypoxia which is already at birthmay indicate a transplacental penetration of this toxic trace element and the possibility of itsnegative impact on the course of pregnancy. Conclusions: The prognostic significance of thelead content was high. Thus, the informative index (Ī) for lead content in serum is 7.40, and theprognostic factor (PC) is + 15.1. As for the prognostic value of the lead content in erythrocytesand urine, very high predictor properties are established for them: Ī = 7.44; PC = + 7.0 and Ī =13.42; PC = + 16.1 respectively. Bangladesh Journal of Medical Science Vol.20(2) 2021 p.330-333

The aim: The aim of this study was to determine the characteristics of thyroid status (thyroid hormone, total and free fractions of triiodothyronine and thyroxine, reversible triiodothyronine, antibodies to thyroperoxidase) of preschool children with acute bronchitis. Materials and methods: We examined 135 preschool children (from 3 to 6 years old) with acute bronchitis (main group) and 28 apparently healthy subjects who were in the control group. It used clinical-anamnestic, laboratory and instrumental research methods. Evaluation of the course of acute bronchitis was carried out in the acute period of the disease. All results were statistically processed using the SPSS 26 package. Results: In 33 % of patients with acute bronchitis there are subclinical abnormalities of thyroid hormones, which manifest themselves in the form of euthyroid sick syndrome. Namely, we found an increased concentration of reversible triiodothyronine in the serum, as well as a decrease in total triiodothyronine and its free fraction. Conclusions: In patients with acute bronchitis in almost every third case there are functional shifts in hormonal status, which are manifested in the form of the first variant of the euthyroid sick syndrome.