The full form of mmHg is “millimeters of mercury.” It is a unit of measurement used to express pressure, specifically blood pressure. It is used to measure the force exerted by the blood against the walls of the arteries as the heart pumps.
Blood pressure is measured in two numbers, systolic and diastolic. Systolic pressure is the force exerted on the arterial walls when the heart beats, while diastolic pressure is the force exerted on the arterial walls when the heart is at rest between beats. The unit mmHg is used to express both systolic and diastolic pressure.
For example, a reading of 120/80 mmHg means that the systolic pressure is 120 mmHg and the diastolic pressure is 80 mmHg. A normal blood pressure reading is considered to be around 120/80 mmHg.
However, blood pressure can vary depending on factors such as age, sex, weight, and overall health. High blood pressure, also known as hypertension, is considered to be 140/90 mmHg or higher, and can increase the risk of heart disease, stroke, and kidney disease. Low blood pressure, or hypotension, is considered to be 90/60 mmHg or lower.
It is important to regularly monitor your blood pressure, and consult with a healthcare professional if you have concerns about your blood pressure levels. They can help you to determine the best course of action for managing your blood pressure, including lifestyle changes and medication.