What is high blood pressure?
Blood pressure measures the force pushing against your artery walls when your heart beats and when it rests. The systolic pressure (top number) measures the pressure against your artery walls when your heart beats (contracts) and pushes blood throughout circulation. The diastolic pressure (bottom number) is the pressure against your artery walls when your heart relaxes (in between beats). High blood pressure is diagnosed when the pressure against artery walls is higher than normal. Another term for high blood pressure is hypertension.
4 Blood Pressure Categories
