if you're over the age of 80, high blood pressure is considered to be from 150/90mmHg or more if your reading was taken at a pharmacy, GP surgery or clinic (or an average of 145/85mmHg if it was taken at home).high blood pressure is considered to be from 140/90mmHg or more if your reading was taken at a pharmacy, GP surgery or clinic (or an average of 135/85mmHg if it was taken at home).They're both measured in millimetres of mercury (mmHg).
The diastolic pressure (lower number) is the resistance to the blood flow in the blood vessels between heartbeats when blood is pumped around your heart. The systolic pressure (higher number) is the force at which your heart pumps blood around your body. Blood pressure is recorded with 2 numbers.
