Prevalence of overweight and cardiovascular risk factors in rural and urban children from Central Asia: The Kazakhstan health and nutrition examination survey

Introduction: There are five different definitions of prediabetes currently used in clinical practice. How cardiovascular risk may differ by these different definitions of prediabetes and whether trends in cardiovascular risk in persons with prediabetes have changed over time is largely uncharacterized. Hypothesis: We expect the prevalence of cardiovascular risk factors will vary by prediabetes definition and will be highest among those who meet clinical definitions with higher cutoff values. We hypothesize awareness, treatment and control of hypertension and hypercholesterolemia have increased over time among those with prediabetes. Methods: We analyzed data for adults ages ≥ 20 years from the 1999-2014 National Health and Nutrition Examination Survey (NHANES). We used calibrated HbA1c and FPG values to estimate prediabetes prevalence. We examined the prevalence and trends of hypertension and hypercholesterolemia among those who met each clinical definition of prediabetes, as well as awareness, treatment, and control. Results: The prevalence of prediabetes by each definitions remained stable across survey years. The prevalence, awareness, treatment, and control of hypertension and hypercholesterolemia by clinical definition modestly increased over time. Conclusion: The prevalence of hypertension and hypercholesterolemia was higher among individuals who met HbA1c-based definitions of prediabetes than other measures and was highest when more restrictive criteria for prediabetes were used. Awareness, treatment, and control of cardiovascular risk factors increased over time by any definition, but the high prevalence of cardiovascular risk factors highlights the need for improvement in risk factor management in people with prediabetes.

Download Full-text

Cardiovascular Risk Factors and their Relationship with Endothelial Dysfunction in Rural and Urban South African Children

10.21203/rs.3.rs-54162/v1 ◽

2020 ◽

Author(s):

Edna N. Matjuda ◽

Godwill Azeh Engwa ◽

Samuel Nkeh Chungag Anye ◽

Benedicta N. Nkeh Chungag ◽

Nandu Goswami

Keyword(s):

Risk Factors ◽

Blood Pressure ◽

Cardiovascular Risk ◽

Endothelial Dysfunction ◽

Cardiovascular Risk Factors ◽

High Blood Pressure ◽

Urban Children ◽

Urban Settings ◽

Arterial Blood ◽

Rural And Urban

Abstract Background: Endothelial dysfunction is known to be an initiator to the development and progression of atherosclerotic cardiovascular disease (CVD). However, there is paucity o knowledge on its relationship with cardiovascular risk factors in children. More so, some of these cardiovascular risk factors are known to be influenced by feeding habits and life style changes which often vary between rural and urban settings. This study was aimed to investigate the relationship between cardiovascular risk factors and endothelial function in rural and urban children. Methods: A cross-sectional study on 6-9 years old children in randomly selected rural and urban schools of the Eastern Cape Province of South Arica was conducted. General anthropometric indices were measured followed by blood pressure (BP) measurements. The pulse wave velocity (PWV) was measured using a Vicorder. Urine sample was collected for the determination of albumin, creatinine, asymmetric dimethylarginine (ADMA), 8-hydroxy-2deoxyguanosine (8-OHdG) and thiobarbituric acid reactive substance (TBARS). Albumin to creatinine ratio (ACR) was calculated.Results: Children from urban settings (10.8%) had a higher prevalence of overweight/obesity than their rural counterparts (8.5%) while the prevalence of elevated/high blood pressure was higher in rural children (23.2%) than in urban children (19.0%). Diastolic blood pressure (DBP) and mean arterial blood pressure (MAP) significantly (p<0.005) increased with increasing quartiles of PWV. ADMA positively associated with HR in rural girls and showed a weak risk for elevated SBP and MAP. Body mass index (BMI) increased with increasing PWV and predicted endothelial dysfunction. 8-OHdG significantly (p<0.005) increased with increasing quartiles of ADMA and positively correlated with ADMA. Creatinine, albumin and ACR significantly (p<0.005) increased with increasing ADMA and ADMA associated positively with creatinine. Conclusion: Endothelial dysfunction was associated with obesity, high blood pressure, oxidative stress and microalbuminuria in children, and this relationship varied between rural and urban children.

Download Full-text