Cardiovascular diseases tops the disease list and accounts for nearly 30% of global deaths in the year 2008. Cardiovascular mainly affect the brain and the kidney. The causes of cardiovascular disease are diverse but hypertension is the most common. As published in the United States report, an estimated 23 million people will lose their lives by the year 2030 due to cardiovascular diseases each year.
When the heart beats, blood is pumped around the body to provide oxygen and energy requirement. Blood pressure is basically a measure of the force used by the heart for pumping blood around the body. When the blood moves, it start pushing against sides of blood vessels. The measurements recorded during heart beat could suggest: