While there is included herewith the report of a case with data and pathologic material adding strong support to the theory that cerebrospinal fluid is a secretion from the choroid plexus cells, I trust that it may serve a purpose in another direction, namely, that it may encourage more frequent observations of spinal fluid pressure, and especially the utilization of a manometer for accurate registration of subarachnoid tension. We are accustomed to see present day case reports and hospital charts with a lumbar puncture record giving the cell count, and Wassermann, colloidal gold and globulin tests; but seldom do we see a recorded figure for the spinal fluid pressure. There are a number of pathologic states involving the central nervous system in which a spinal fluid pressure reading is of as much importance as (in some of more importance than) a cell count or Wassermann test.
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SKOOG AL. CEREBROSPINAL FLUID PRESSURE. JAMA. 1917;LXIX(13):1064–1067. doi:10.1001/jama.1917.02590400024008