• Jan B Sommer, Charly Gaul, Josef Heckmann, Bernhard Neundörfer, and Frank J Erbguth.
• Department of Neurology, University of Erlangen-Nürnberg, Erlangen, Germany. jan.sommer@neuro.imed.uni-erlangen.de
• Eur. Neurol. 2002 Jan 1;47(4):224-32.

AbstractVentriculitis may sometimes occur after an external ventricular drain has been removed, and diagnosis has to be made by lumbar puncture. But are the lumbar findings comparable to previously obtained ventricular results? In a prospective study, sample pairs of ventricular and lumbar cerebrospinal fluid (CSF) were obtained at an interval of <30 min in 25 patients with increased intracranial pressure suffering from cerebral hemorrhage (n = 15), meningitis/encephalitis (n = 6), cerebral infarction (n = 3), and meningeosis carcinomatosa (n = 1). CSF was analyzed for protein, albumin, IgG, IgA, IgM, glucose, lactate, and leukocytes including cytological differentiation. A significant ventriculo-lumbar increase was observed for protein, albumin, and the immunoglobulins. Lactate was distributed equally in ventricular and lumbar CSF, as well as glucose in the cerebral hemorrhage subgroup (n = 15). Cell count failed to show a clear ventriculo-lumbar ratio. Cytological distribution was comparable in lumbar and ventricular CSF, except for macrophages showing a significant rostrocaudal decrease. In conclusion, in cases of clinically suspected bacterial central nervous system infection after removal of an external ventricular drain, lumbar CSF lactate, glucose, and cytology are comparable to previously determined ventricular values, and thus may help physicians to choose the best treatment.Copyright 2002 S. Karger AG, Basel

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