title: Can cerebrospinal fluid uric acid levels differentiate intraventricular hemorrhage from traumatic tap?
abstract: OBJECTIVE
  To measure blood and cerebrospinal fluid (CSF) uric acid (UA) levels of neonates with intraventricular hemorrhage (IVH), and to examine whether or not UA can be used to differentiate traumatic tap from IVH.
  
  
  METHODS
  The control group (n = 19, group I) consisted of neonates presenting with signs requiring analysis of CSF but whose CSF indices proved to be normal. Traumatic taps (n = 15, group II) were mimicked by adding 2 drops of homologous blood to normal CSF samples. The IVH group (n = 21, group III) consisted of neonates who had been diagnosed by cranial ultrasonography or computed tomography scans. Data are presented as median (range).
  
  
  RESULTS
  There was no significant difference between groups with respect to serum UA levels. While no significant difference was observed between CSF UA levels of the control [0.6 (0.1-1.8) mg/dl] and traumatic tap group [0.5 (0.3-1.1) mg/dl], the IVH group [1.6 (0.7-6.9) mg/dl] was found to have significantly higher CSF UA levels than groups I and II. Furthermore, although there were significant correlations between serum and CSF UA levels in the control and traumatic tap groups, no correlation was observed in the IVH group.
  
  
  CONCLUSIONS
  CSF UA levels are increased in neonates with IVH and they may be used to differentiate a real hemorrhage from a traumatic tap.
authors.affiliation: Neonatology Unit, Department of Pediatrics, Kirikkale University Faculty of Medicine, Kirikkale, Turkey. didem.aliefendioglu@gmail.com
authors.forename: Didem
authors.initials: D
authors.lastname: Aliefendioğlu
authors.forename: Tuğba
authors.initials: T
authors.lastname: Gürsoy
authors.forename: K Mutlu
authors.initials: KM
authors.lastname: Hayran
authors.forename: Ayşe Tana
authors.initials: AT
authors.lastname: Aslan
mesh_terms: D001930:Brain Injuries / Q000175:diagnosis*; D002552:Cerebral Ventricles / Q000098:blood supply; D003937:Diagnosis, Differential; D003943:Diagnostic Techniques, Neurological; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D020300:Intracranial Hemorrhages / Q000175:diagnosis*; D008297:Male; D011237:Predictive Value of Tests; D012680:Sensitivity and Specificity; D014527:Uric Acid / Q000097:blood / Q000134:cerebrospinal fluid*
chemical_list: D014527:Uric Acid