The first (top) number is the pressure when your heart beats (systolic pressure).
At the end, the machine will give a blood pressure reading.īlood pressure is measured in millimetres of mercury (which is written as mmHg).Ī blood pressure reading contains two numbers and will be written as a figure like 120/75 (this is said as '120 over 75'.)
When the machine is switched on the cuff tightens and then slowly loosens again. This cuff is attached to a machine which measures the pressure inside your arteries. Blood pressure is measured using a machine called a blood pressure monitor.Ī cuff (thick band) is put over your arm.
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