The main carriers of blood in our body are the arteries and the pressure exerted on the walls of the arteries is generally referred to as the blood pressure. This pressure is sometimes abnormally high while at times it dips to great depths. If the blood pressure remains high for sometime, it is called high blood pressure whereas the other way round is referred to as low blood pressure. Both these conditions are definitely curable, all one needs is proper and timely treatment and monitoring.
Now let us come to the blood pressure readings scale. Blood pressure is measured on the basis of the diastolic and systolic. When the heart pumps out blood, the pressure is different at different times. When this pressure is the highest, it is called systolic pressure and when it is lowest i.e. the moment it takes rest it is called diastolic pressure.
Both of them are written together like 120/80 mm Hg, the first number here is that of systolic pressure and the second one is of diastolic pressure. It is generally pronounced by people as “120 over 80”
If your readings are lower than 120/80, then you have low blood pressure and if they are between 120/80 and 140/90 then it is quite normal. But if they are above 140/90, then you have high blood pressure. If your pressure is between 120 and 139 then this is called prehypertension.
An interesting thing about blood pressure readings scale is that they are the lowest when we sleep and highest when we get excited and nervous.