When the systolic pressure is 120 (☑0) mmHg and diastolic pressure is 80 (±5) mmHg then it is called Normal Blood pressure. A decreased or very low blood pressure is referred to as Hypotension. An elevated or increased blood pressure is called Hypertension. The measured values are written as systolic and diastolic numbers.įor example, if a person has 120/80 mmHg blood pressure, it means his systolic pressure is 120 and diastolic is 80.
The second value is the diastolic pressure (low value) which is measured when the heart muscles relax and allow the blood to enter the heart. The first one is the systolic pressure (high value) which is measured when the heart contracts and pumps blood into the arteries.
The blood pressure measurement is recorded by two numbers. Blood pressure is measured by an instrument called ‘sphygmomanometer’ in the units of millimeters of mercury (mmHg). When the heart pumps blood into the arteries, it produces blood pressure and it constitutes one of the body’s most vital signs. The force exerted on the walls of arteries by the circulating blood is called Blood Pressure.
