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Understanding CSF Leakage and Skull Fractures

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A comprehensive overview of CSF leakage, its implications, and types of skull fractures.

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Understanding CSF Leakage and Skull FracturesVersión en línea

A comprehensive overview of CSF leakage, its implications, and types of skull fractures.

por Melissa Pennington
1

Introduction to CSF Leakage

CSF leakage can occur through the nose (rhinorrhea) or ear (otorrhea). This indicates a fracture that has affected the dura mater.

Rhinorrhea may also present as postnasal sinus drainage and can be easily overlooked.

2

Confirming CSF Leakage

To determine if the leaking fluid is CSF, two tests are commonly used:

  • Dextrostix or Tes-Tape strip: Tests for glucose in the fluid. CSF will test positive, but blood presence can lead to unreliable results.
  • Halo or Ring Sign: Drip fluid onto a white gauze pad; if CSF is present, a yellowish ring will form around the blood.
3

Risks Associated with CSF Leaks

A CSF leak significantly increases the risk of meningitis. Preventive antibiotics should be administered.

Document the color, appearance, and amount of fluid, as tests can yield false positives.

4

Major Complications of Skull Fractures

The primary complications include:

  • Intracranial infections
  • Hematoma
  • Meningeal and brain tissue damage
5

Types of Skull Fractures

Skull fractures can be categorized into four main types:

  • Linear Fractures: Most common, usually not serious unless they cross major blood vessels.
  • Depressed Fractures: Inward skull depression, can damage brain tissue, may require surgery.
  • Comminuted Fractures: Multiple bone fragments, higher risk of brain damage and complications.
  • Basilar Fractures: Base of the skull, often associated with CSF leakage and high complication risk.
6

Manifestations of Basilar Fractures

Signs include:

  • CSF or brain otorrhea
  • Bulging tympanic membrane
  • Battle sign
  • Tinnitus or hearing difficulty
  • Rhinorrhea
  • Facial paralysis
  • Conjugate gaze deviation
  • Vertigo
7

Manifestations of Frontal Fractures

Signs include:

  • Exposure of brain to contaminants via frontal air sinus
  • Possible air in forehead tissue
  • CSF rhinorrhea
  • Pneumocranium (air between cranium and dura mater)
8

Manifestations of Orbital Fractures

Signs include:

  • Periorbital bruising (raccoon eyes)
  • Optic nerve injury
9

Manifestations of Parietal Fractures

Signs include:

  • Deafness
  • CSF or brain otorrhea
  • Bulging tympanic membrane
  • Facial paralysis
  • Loss of taste
  • Battle sign
10

Manifestations of Temporal Fractures

Signs include:

  • Boggy temporal muscle due to blood extravasation
  • Oval bruise behind the ear (Battle sign)
  • CSF otorrhea
  • Middle meningeal artery disruption
  • Epidural hematoma
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