CSF pressure assessed by lumbar puncture agrees with intracranial pressure

Abstract
The accuracy of estimating intracranial pressure in brain tissue (ICPBT) via lumbar space was investigated using preset pressure levels in the interval 0 to 600 mm H2O in patients with communicating hydrocephalus. Lumbar space ICP correlated excellently to ICPBT, demonstrated by a measured mean difference of 10 mm H2O (0.75 mm Hg) and a regression coefficient of 0.98. The concurrence supports the lumbar puncture as an accurate technique to determine ICP in patients with communicating CSF systems.