NCT05982847

National Blood Pressure Screening in Children to Improve Paediatric Healthcare in South Africa

National Blood Pressure Screening in Children to Optimise Clinical Management of Paediatric Hypertension in South Africa

• Status: Recruiting
• Phase: —
• Study type: Observational
• Enrollment: 22,464 (estimated)
• Sponsor: North-West University, South Africa · Academic / Other
• Sex: All
• Age: 5 Years – 18 Years
• Healthy volunteers: Accepted

Summary

The Childhood Hypertension Consortium of South Africa (CHCSA) was established to foster relationships between the healthcare sector and schools through community engagement and outreach as well as contributing to the decolonization of normative paediatric blood pressure reference values. To date, there has been no nation-wide project in South Africa to determine nationally representative normal blood pressure reference values, nor to estimate the true prevalence of hypertension in the paediatric population of the country. This study will provide critical information on the understanding of blood pressure and hypertension in children, especially of African ancestry. Not only will this effort contribute to the development of the first nationally representative normal reference values of blood pressure but will also benefit healthcare providers in the sector with a clear guideline on the management of high blood pressure in children as developed by experts working with these challenges daily.

Detailed description

Rationale: Currently there exist no nationally representative set of normative reference values for blood pressure and anthropometry in South African children, while clinicians rely on European and US reference values. The latter seems inappropriate in the South African setting, especially considering the lack of data available in African ancestry normative data. Objectives: The investigators aim to development the first nationally representative normal reference values of blood pressure and anthropometry in children, to develop scientific evidence-based hypertension guidelines in the paediatric population of South Africa. Methods: The target population for this study includes 5 to under 18 years school-aged (all school quintiles) children in South Africa from all provinces in the country selected in a randomized manner and to ensure generalizability. Population: A sample of 22 464 (81% Black African; 9% Coloured; 8% White and 2% Indian/Asian) will be required to enable computation of reference values for each age and sex across urban, peri-urban and rural settings in all provinces. Time frame: The study will recruit and collect data over a period of five years. Expected outcomes: The investigators expect that normative blood pressure in children (ages above 5 and under 18 years) will differ from currently accepted international thresholds. The investigators will engage in the communities to optimise awareness and care of high blood pressure and its comorbidities. Recommendations will be made to the National Department of Health regarding blood pressure measurement/screening for hypertension in children at the local clinic in the Road to Health booklet. The investigators will also develop the first clinical practice guidelines for the management of hypertension in children in South Africa in collaboration with hypertension societies.

Conditions

• Hypertension
• Obesity, Adolescent
• Obesity, Childhood

Interventions

Type	Name	Description
DIAGNOSTIC_TEST	Blood pressure screening	Blood pressure and anthropometric measurements will be performed in children and adolescents between ages 5-18 years to develop South African nomograms that will aid in the development of clinical practice guidelines to optimise hypertension care in South Africa youth.

Timeline

• Start date: 2024-04-01
• Primary completion: 2028-11-30
• Completion: 2028-11-30
• First posted: 2023-08-09
• Last updated: 2026-04-07

Locations

11 sites across 2 countries: South Africa, Switzerland