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CSF Blood

Aka: CSF Blood, CSF Red Blood Cell, CSF RBC
  1. See Also
    1. Cerebrospinal Fluid
    2. Lumbar Puncture
  2. Technique
    1. Count Red Blood Cells in first and third tubes
  3. Correction: For each 500-1000 RBCs/mm3
    1. CSF Leukocytes increase by 1
    2. CSF Protein rises 1 mg/deciliter
  4. Causes
    1. Subarachnoid or intracranial bleeding
      1. RBC Count unchanged between first and third tubes
      2. Blood does not clot
      3. Xanthochromia suggests bleeding
        1. See CSF Color
        2. CSF supernatant xanthochromic on centrifugation
        3. Requires at least 2 to 4 hours from onset of bleed
    2. Traumatic tap
      1. RBC Count decreases between first and third tubes
      2. CSF becomes clear on centrifugation
      3. Consider repeating tap at higher interspace
  5. References
    1. Kooiker in Roberts (1998) Procedures in ER, p. 1067-75
    2. Ravel (1995) Lab Medicine, Mosby, p. 294-9
    3. Tunkel in Mandell (2000) Infectious Disease, p. 974-8
    4. Seehusen (2003) Am Fam Physician 68:1103-8

Erythrocytes:Number Concentration (count/vol):Point in time:Cerebral spinal fluid:Quantitative (C0942423)

Concepts Clinical Attribute (T201)
English Erythrocytes [#/volume] in Cerebral spinal fluid, RBC # CSF, Erythrocytes:NCnc:Pt:CSF:Qn, Erythrocytes:Number Concentration (count/vol):Point in time:Cerebral spinal fluid:Quantitative
Sources
Derived from the NIH UMLS (Unified Medical Language System)


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