In a blood pressure reading of 120/80, which number represents systolic pressure?

In a blood pressure reading such as 120/80, the first number represents the systolic pressure. Systolic pressure is the force of blood against the artery walls when the heart beats and pumps blood. It indicates the highest pressure within the arteries during each heart contraction.

The second number, which is 80 in this case, represents diastolic pressure. Diastolic pressure occurs when the heart is at rest between beats, reflecting the pressure in the arteries when the heart fills with blood. The distinction between these two values is crucial, as they provide insight into cardiovascular health. A normal systolic reading is typically below 120, which is in line with the figure presented.

Understanding blood pressure readings is essential for assessing the risk of conditions like hypertension, heart disease, and stroke.