what cause low hematocrit and hemoglobin in a young child

HTN in childhood may contribute to premature atherosclerosis and the early development of cardiovascular disease (CVD). In adolescents 13 years or older, elevated BP is defined as 120 to 129 mm Hg systolic BP and less than 80 mm Hg diastolic BP, and HTN is defined by a BP of 130/80 mm Hg or higher 10. In children younger than 13 years old, elevated blood pressure (BP) is defined as BP in the 90th percentile or higher considering age, height, and sex, and HTN is defined as BP in the 95th percentile or higher 10. It is a growing health problem that is often overlooked 8, 9. HTN in childhood often leads to HTN in adulthood, as childhood BP predicts adult BP 4, 5, 6, 7. Hypertension (HTN) is an important risk factor for cardiovascular disease 1 and a large contributor to the global burden of disease 2, 3. Hb count and Hct were positively associated with SBP and DBP in children and adolescents 10–18 years old. Following multiple linear regression analysis, Hb count and Hct presented a positive association with SBP and DBP after adjusting for age, BMI SDS, alcohol consumption, smoking status, physical activity, rural residence, household income, diagnosis of T2DM, hypertension, and dyslipidemia. Systolic BP (SBP) and diastolic BP (DBP) positively correlated with Hb count and Hct in both sexes. Hb count and Hct tended to increase with the degree of obesity and BP elevation. The prevalence of hypertension was 19.19% (21.51% for boys and 16.5% for girls) among the study population, and the prevalence of obesity was 9.59% (10.5% for boys and 8.6% for girls).

The study population consisted of 7950 subjects total (4229 boys and 3721 girls) aged 10–18 years who participated in the Korea National Health and Nutrition Examination Surveys conducted between 20. To investigate the associations between hemoglobin (Hb) concentration and hematocrit (Hct), and blood pressure (BP) in children and adolescents.

What cause low hematocrit and hemoglobin in a young child