![]() ![]() This type of high blood pressure is called secondary hypertension. In some people, their high blood pressure is caused by an underlying condition. It tends to develop gradually over many years. This type of high blood pressure is known as primary or essential hypertension. ![]() Most adults have no identifiable cause of high blood pressure. There are 2 types of high blood pressure: Primary (essential) hypertension What are the causes of high blood pressure? Elevated blood pressure: 120 – 129 / ≤ 80 mmHg.Normal blood pressure: Below 120 / 80 mmHg.The first number is called the systolic pressure (peak pressure) and the second, diastolic pressure (the trough reading).Īccording to American guidelines, blood pressure readings fall into several categories: The reading is given in millimetres of mercury (mmHg) and has two numbers. Your blood pressure reading is a reflection of the amount of blood your heart pumps (stroke volume) and the amount of resistance to blood flow in your arteries. Blood pressure, as the name suggests, is the measure of the force of blood pushing against the blood vessel walls. ![]()
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