Pressure

[Ferokon]

Hello, to me of 14 years, at me low pressure, tell or say please, whether it is possible as nibud to correct and if that is possible as?

[Aritmolog]

What does " low pressure " mean?
If the BP is more or peerly 90/60 mm hg
And it is less or peerly 140/85 mm hg,
That pressure absolutely normal, instead of low or raised or increased...
Specify digits, please...