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Hypoglycorrhachia in neonatal intracranial hemorrhage. Relationship to posthemorrhagic hydrocephalus.

The level of cerebrospinal fluid (CSF) glucose may be lowered after subarachnoid hemorrhage. This was observed in each of 18 cases of proven posthemorrhagic hydrocephalus in infants (study group). In one of these children with a hemorrhagic spinal fluid and hypoglycorrhachia unaccompanied by clinical signs of intracranial hemorrhage or hydrocephalus, the axial tomography showed a significant although asymptomatic hydrocephalus. To further evaluate the significance of this finding (hypoglycorrhachia), we compared the incidence of hypoglycorrhachia (CSF glucose less than 40 mg) and lowered CSF glucose/blood glucose ratio (ratio less than 0.4) at three similar time intervals from the presumed time of the intracranial hemorrhage in the study group with that of a control group of 40 neonates with similar neonatal associated pathology (mainly premature infants with hyaline membrane disease) but who did not later develop posthemorrhagic hydrocephalus or cerebral palsy. There was a statistically greater frequency of these anomalies in the hydrocephalic group. Only 3 of the 40 control patients had hypoglycorrhachia and low ratio. Hypoglycorrhachia in the absence of other known causes for decreased CSF glucose is a good index of a probably significant meningeal hemorrhage with a high risk of secondary hydrocephalus which may or may not be symptomatic. Hypoglycorrhachia may be used as an indication of the frequency of clinically inapparent subarachnoid hemorrhage in these high risk newborns.

Cerebrospinal Fluid Proteins↗