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Monobasic salt of carbonic acid. As a substance occurring in the blood it binds hydrogen ions (H+) and thus prevents overly acidic conditions (acidosis). In the event of disorders, it is artificially added through infusion (buffer substance).

Blood without cell components.

Is the pressure exerted by the blood against the walls of the blood vessels, especially the arteries. Too high blood pressure increases the risk of heart attack and stroke and is treated by blood pressure medication (antihypertensives).

Substance which can take on or give off hydrogen ions and thus can neutralise disturbances in the acid-base balance.