A Cross-sectional Study On Blood Presure Levels And Its Determinants In Adolescent In Guangzhou

Hypertension almost increases sreadily since the past decade,and has become an increasingly important medical problem in children and adolescents. In national surveys from the 1990s to the 2000s, the prevalence of hypertension in children grew from 1% to 7-8%. Moreover childhood overweight and obesity,which are independent risk factors of hypertension Outcomes related to childhood hypertension,and induce a prevalence of childhood and adolescent. Primary hypertension in children has become increasingly common in association with obesity and other risk factors, including a family history of and life behavior.Obese children are at approximately a 3-fold higher risk for hypertension than nonobese children. The benefits of weight loss for blood pressure reduction in children have been demonstrated in both observational and interventional studies.Objective:To found the incidence of high blood pressure, and to explore the association between body mass index(BMI), living behavioral factors and family factors of students and high blood pressure, provide vidences for prevention of hypertension in adolscents aged 11 to 18 in Guanzhou.Methods:This was a cross-sectional study used by simple cluster sampling method.Medical check-up and a youth risk behavior questionnaire were conducted with students for a total of 4542 from 4 middle schools in Guangzhou. Chi-square and multivariate Logistic regression analysis were performed to explore relationships between blood pressure levels and the relative factors including obesity.Results:1. According to the data for the diagnostic criteria of blood pressure in Report on the Physical Fitness and Health Surveillance of Chinese School in 2005 (P90 and P95), Hypertension detection rate of prehypertension was 10.6%(14.5% for boys and girls 7.2%),and the prevalence rate of hypertension was 4.7% (5.2% for boys and for girls 4.2%) in high school students in Guangzhou.2. The International Academy of Sciences recommended by the Working Group on Obesity in China, "China's school-age children BMI of overweight and obesity screening classification criteria" for the diagnostic criteria, the use of 2005 Chinese students study physical and health data in P85 and P95 high school students for the BMI reference values for students. The detection of overweight and obesity rates, have overweight rates 12.7% for boys and 5.0% for girls, Obesity rates were 6.46% for boys and 2.5% for girls.3 Obesity is the most important risk factors of high blood pressure in high school students in Guangzhou,when the students with BMI divided into normal weight, overweight and obese group, high blood pressure in overweight morer than in normal group, and high blood pressure in the obese group morer than overweight high.4. Multivariate Logistic regression analysis showed, BMI was risk factor of high blood pressure。OR=3.826 (95%CI:3.125,4.864)。Conclusions:According to the data for the diagnostic criteria of blood pressure in Report on the Physical Fitness and Health Surveillance of Chinese School in 2005 (P95), Hypertension detection rate was 4.7%(5.2% for boys and for girls 4.2%) in high school students in Guangzhou.Obesity play important roles in the progress of adolescent hypertension. The adolescent hypertension may develop to adulthood,so prevention of hypertension should be conducted from chikdren and adolescents.Especially to the children who are overweight or obesity.That's very important.