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Table 22 CSF pressure is dependent on the caliber of the needle used for puncture

From: S1 guidelines “lumbar puncture and cerebrospinal fluid analysis” (abridged and translated version)

AuthorSubjects (n)PopulationNeedleMedianSDRange2.597.5
    mmH2O
[58]31Students, healthy22 und 26 G145 (22G); 157 (26G)37 (22G); 36 (26G)85 -230 (22G); 80 – 240 (26G)40 (22G); 50 (26G)250 (22G); 260 (26G)
[188]354Neurological diseases without increased intracranial pressure20 and 22 G, atraumatic170 90-280100250