Abstract
This study provides examination of cardiovascular system of children who live in Ust-Kamenogorsk, mainly in its environmentally polluted areas as industrial zones and Ulbinsk region. The work focused on studying the age and gender characteristics of the cardio vascular system in children living in environmentally unfavorable conditions of Ust-Kamenogorsk. The study highlighted the role of contamination into the development of many diseases that affect cardiovascular system of children in various age categories. The features of cardiorespiratory system were evaluated by methods of pneumotachometry, variational pulsometry, electrocardiography, Holter daily monitoring of electrocardiography. There was detected a gradual increase in sympathetic regulation of heart rate in boys and humoral regulation in girls aged 9-12 years. It was shown that the resistance of children’s organism to the harmful environmental effects depend on their constitutional features. The increased level of stress also affects the well-being of children, as caused by the unfavourable conditions. The method of daily ECG monitoring revealed an increase in the frequency of elevation ST segment, to a lesser extent its depression, so the incidence of bradycardia is more often than tachycardia.
Highlights
The city of Ust-Kamenogorsk was and remains among the most polluted cities in the world [1]
This study provides examination of cardiovascular system of children who live in Ust-Kamenogorsk, mainly in its environmentally polluted areas as industrial zones and Ulbinsk region
The method of daily ECG monitoring revealed an increase in the frequency of elevation ST segment, to a lesser extent its depression, so the incidence of bradycardia is more often than tachycardia
Summary
The city of Ust-Kamenogorsk was and remains among the most polluted cities in the world [1]. 15 years old living in Ust-Kamenogorsk: age dynamics of functional conditions of bronchial patency in children and its features relative to the Central European standards; specifics of heart rate regulation in children of different ages and sex; the dynamics of daily ECG of children. There was revealed the dependence of functional state of the bronchopulmonary and cardiovascular system of children from the level of environmental pollution: in children living in more contaminated area, there were detected signs of reduction of functional reserves of the studied systems. The role of constitutional factor of children in the risk of diseases was determined: children who have the growth-weight ratio higher than the average value, revealed more reduction of functional reserves of the bronchopulmonary system, and children with the coefficient lower than the average had reduction of the cardiovascular system
Sign-in/Register to view highlights & summary 
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call