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Intracranial PressureAka: CSF Pressure, CSF Opening Pressure

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  1. See Also
    1. Cerebrospinal Fluid
    2. Lumbar Puncture
    3. Cerebrospinal Fluid Examination
  2. Background
    1. Not affected by systemic Blood Pressure
    2. Sensitive to blood pCO2
      1. Hyperventilation lowers intracranial pressure
  3. Technique
    1. Counsel patient to try to relax
      1. Avoid Hyperventilation (lowers pressure)
      2. Avoid straining (raises pressure)
    2. Patient lies in lateral decubitus position
      1. Legs and neck should be in neutral position
      2. Opening pressure not accurate in sitting position
  4. Interpretation
    1. Normal
      1. Children <8 years: 10 to 100 mm H2O
      2. Children >8 years: 60 to 200 mm H2O
      3. Adults: 60 to 200 mm H2O
      4. Obesity: 60 to 250 mm H2O
      5. Fluctuation
        1. With pulse: 2 to 5 mm H2O
        2. With respirations: 4 to 10 mm H2O
    2. Decreased: Intracranial Hypotension (uncommon)
      1. Trauma with secondary cerebrospinal fluid leak
      2. Recent Lumbar Puncture
    3. Increased: Intracranial Hypertension
      1. See Increased Intracranial Pressure Causes
  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

Cerebrospinal Fluid Pressure (C0007809)

Definition (MSH)Manometric pressure of the CEREBROSPINAL FLUID as measured by lumbar, cerebroventricular, or cisternal puncture. Within the cranial cavity it is called INTRACRANIAL PRESSURE.
Definition (CSP)manometric pressure of the cerebrospinal fluid as measured by lumbar, cerebroventricular, or cisternal puncture.
ConceptsClinical Attribute (T201)
MSHD015170
EnglishCerebrospinal Fluid Pressure, Cerebrospinal fluid pressure finding, Cerebrospinal fluid pressure observation, Cerebrospinal Fluid Pressures, CSF - Cerebrospinal fluid pressure, CSF pressure, CSF PRESSURES, PRESSURE CSF, PRESSURES CSF
Spanishhallazgo en la presion del liquido cefalorraquideo, presion de LCR, presion del liquido cefalorraquideo
Parent ConceptsCerebrospinal Fluid (C0007806), Nervous System Physiologic Phenomena (C1720888), Cerebrospinal Fluid Pressure (C0007809), Central nervous system finding (C0422878), Cerebrospinal fluid pressure observable (C1285605), Duplicate concept (C1274013)
SourcesCSP, LCH, MSH, SCTSPA, SNOMEDCT
Derived from the NIH UMLS (Unified Medical Language System)


Intracranial Pressure (C0021880)

Definition (MSH)Pressure within the cranial cavity. It is influenced by brain mass, the circulatory system, CSF dynamics, and skull rigidity.
Definition (CSP)pressure within the cranial cavity, influenced by brain mass, the circulatory system, cerebrospinal fluid dynamics, and skull rigidity.
ConceptsOrgan or Tissue Function (T042)
MSHD007427
EnglishICP - Intracranial pressure, Intracranial Pressure, Intracranial Pressures, Subarachnoid Pressure, Subarachnoid Pressures
Spanishpresion intracraneal
Parent ConceptsCerebrospinal Fluid Pressure (C0007809), Intracranial pressure observable (C1285604)
SourcesCSP, LCH, MSH, SCTSPA, SNOMEDCT
Derived from the NIH UMLS (Unified Medical Language System)



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