Elevated Blood Pressure among Rural South African Children in Thohoyandou, South Africa

Daniel Goon1, Lateef Amusa, Dorothy Mhlongo

  • 1Centre for Biokinetics, Recreation and Sport Science, University of Venda, Thohoyandou, South Africa.

Insights

Blood pressure increases with age in rural South African children. This study found elevated blood pressure and its correlation with body mass index (BMI) in children aged 7-13 years.

Area of Science:

  • Pediatric Health
  • Cardiovascular Epidemiology
  • Anthropometry

Background:

  • Limited data exists on blood pressure profiles of rural South African children.
  • Previous research primarily focused on urban populations.

Purpose of the Study:

  • To determine blood pressure profiles in rural South African children in Thohoyandou.
  • To investigate the relationship between body mass index (BMI) and blood pressure.

Main Methods:

  • A study of 296 children aged 7-13 years.
  • Blood pressure measured thrice using validated electronic devices.
  • Overweight defined by BMI for gender and age; hypertension by BP ≥ 90th percentile.

Main Results:

  • Overweight prevalence was 4.7% in girls and 3.9% in boys.
  • Systolic and diastolic blood pressures increased with age in both sexes.
  • Hypertension incidence was low (0.4% in boys, 0.2% in girls) but correlated with age, BMI, and height.

Conclusions:

  • Elevated blood pressure is present in this rural South African pediatric population.
  • Blood pressure positively correlates with age, body weight, height, and BMI in children.
  • Findings highlight the importance of monitoring BP and BMI in rural children.
Abstract

Related Concept Videos

Blood Pressure01:24

Blood Pressure

The movement of blood in a human body, commonly referred to as blood flow, is determined by the volume of blood that traverses a certain section of the bodily system per unit time. It is the rhythmic contraction of the heart's ventricles that primarily instigates this movement. As the ventricles contract, blood is forced into the prominent arteries, which then flow from areas of greater pressure to lower pressure areas. This movement continues into smaller arteries and arterioles and...
Blood Pressure01:30

Blood Pressure

Blood pressure (BP) is the pressure or force of blood exerted on the artery's walls as it circulates through the body. It is essential for maintaining blood flow throughout the body.
The average BP in an adult is typically around 120/80 mmHg (millimeters of mercury). In this measurement, the numerator (120) indicates the systolic pressure, which is the pressure in the arteries during the contraction of the heart's ventricles as blood is expelled. The denominator (80) represents the diastolic...
Factors affecting Blood pressure01:28

Factors affecting Blood pressure

Several physiological and lifestyle factors influence blood pressure (BP). Understanding these factors is crucial as they are significant in patient education and blood pressure management.
Physiological Factors:
Alterations in Blood Pressure01:30

Alterations in Blood Pressure

Alterations in blood pressure, such as hypertension (high blood pressure) and hypotension (low blood pressure), significantly affect human health. Understanding these conditions' classifications, causes, and symptoms is essential for effective management and treatment.
Hypertension (High blood pressure)
Hypertension occurs when blood pressure readings consistently exceed the normal range. It is diagnosed when systolic blood pressure (the top number, indicating pressure while the heart beats)...
Hypertension I: Introduction01:28

Hypertension I: Introduction

Hypertension is a widespread, long-term medical condition where blood pressure in the arteries remains elevated. It is characterized by systolic blood pressure readings of 130 mm Hg or above or diastolic blood pressure (DBP) readings of 80 mm Hg or higher. Unmanaged hypertension poses significant health risks, making the distinction between primary (or essential) hypertension and secondary hypertension crucial, as their management and implications vary.Primary HypertensionPrimary hypertension,...
Measurement of Blood Pressure01:17

Measurement of Blood Pressure

Assessing blood pressure is a standard procedure executed in virtually all medical environments. The method utilized today was established over a hundred years ago by an innovative Russian doctor, Dr. Nikolai Korotkoff. The soft ticking noise, known as Korotkoff sounds, heard while taking blood pressure readings results from turbulent blood flow within the vessels. The apparatus required for this procedure includes a sphygmomanometer, a blood pressure cuff attached to a gauge, and a stethoscope.