Tracing Study On Heart Structure And Function Of Overweight And Obese Children In Some Primary Schools In Beijing

Objective: To investigate the effects of overweight and obesity with different durations on children’s cardiac morphological and function through follow-up surveys,and to provide theoretical evidence for effective measures to intervene in overweight and obese children.Methods: A total of 703 students from five primary schools in Beijing were selected as the study subjects.They were followed for three consecutive years.Height,weight,and echocardiography tests were performed from November to December each year.Data were analyzed using analysis of variance,chi-square test,and Logistic regression analysis.Results: 1.Baseline survey: Compared with normal children,the left ventricular inner diameter and quality of super-recombinant boys significantly increased(P<0.05),and the girls’ heart rate and cardiac output increased significantly(P<0.05);Obese group of boys left ventricle The inner diameter,posterior wall thickness,volume,mass,cardiac output,and stroke volume were significantly increased(P<0.05).The left ventricular inner diameter,volume,mass,cardiac output,and stroke volume were significantly increased in girls(P<0.05)..There is no increase in the risk of left ventricular hypertrophy in overweight and obese children.2.Follow-up survey: In terms of cardiac structure,most of the cardiac structural indicators of children with persistent overweight and obese children were significantly higher than those of normal children,especially children with persistent obesity.Boys even experienced relative thickening of the wall thickness,and different BMI grouping factors were necessary for boys.The development of most cardiac structural parameters had an influence(P<0.05),and affected the development of left ventricular diameter,volume,and quality in girls(P<0.05).In terms of cardiac function,there was no change in cardiac function index of overweight boys for two years.The girls’ stroke volume was higher than that of the normal group.The cardiac output and stroke volume of obese children in the two and three-year groups were significantly higher than those in the normal group,and the heart rate of the obese children in the three-year group increased significantly,while the blood pressure index and EDV/ BSA decreased, different BMI grouping factors had influence on the development of CO and SV in boys(P<0.05),and had no influence on the development of heart function in girls(P>0.05).The impact was manifested as the development of these indicators in overweight and obese children.Up,the highest in obese children.The risk of left ventricular hypertrophy in obese children over a period of two years and three years was 2.313(1.462 to 3.658)times normal and 5.177(2.973 to 9.015)times higher in normal children,respectively,and there was no increase in the risk of left ventricular hypertrophy in persistent overweight children.Conclusions: 1.Overweight and obese children aged 6~7 years old had an increase in the diameter of the left ventricle,an increase in the wall thickness,and an increase in mass;with the prolonged duration of overweight and obesity,the cardiac structure changed generally.2.The cardiac output and stroke volume of overweight and obese children aged 6 to 7 years increased,and the systolic function of the heart increased compensatoryly.When obesity persists for a certain period of time,the children’s myocardial work efficiency decreases and the heart contraction function begins to decline.3.Overweight and obesity have an effect on the development of children’s heart structure and function,manifested as early development.4.Obesity can predict the risk of left ventricular hypertrophy in children,prolong the duration of childhood obesity,and increase the risk of left ventricular hypertrophy.5.The influence of overweight and obesity on the heart structure and function of boys is greater than that of girls.