CSF Pressure in Hydrocephalus

Measurement of CSF pressure in hydrocephalus. The normal ventricular CSF pressure, which should not exceed 10 mm mercury (Hg) at rest and in supine position, is age-dependant and reaches in schoolchildren values of adulthood. In case of CSF obstruction the basal pressure is increased, illustrated by a newborn with clinical signs of a progressive hydrocephalus and a CSF basal pressure of more than 20 mm of mercury. Notice the spontaneous and the breathing-dependant pressure changes to the left with quick registration, and the blood pressure-dependant pressure changes to the right with slow registration (pulse waves at the lower line).