Abstract

Abstract: Blood pressure is the force of blood pushing against the walls of arteries as the heart pumps blood. When a health care professional measures your blood pressure, they use a blood pressure cuff around your arm that gradually tightens. The results are given in two numbers. The first number, called systolic blood pressure, is the pressure caused by your heart contracting and pushing out blood. The second number, called diastolic blood pressure, is the pressure when your heart relaxes and fills with blood. A blood pressure reading is given as the systolic blood pressure number over the diastolic blood pressure number. Blood pressure levels are classified based on those two numbers. Hypertension is an important public health problem worldwide. Analysis of the global burden of hypertension revealed that over 25% of the world's adult population had hypertension in 2000, and the proportion is expected to increase to 29% by 2025.According to the World Health Report 2002, cardiovascular disease accounted for 9.2% of total deaths in the African region in 2001 , and hypertension remains the mostimportant risk factor with national prevalence levels ranging from 25% to 35% in adults aged 25–64 years . Growing evidence suggests that high blood pressure constitutes the basis for the CVD epidemic in sub-Saharan Africa .

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