a patient with a clear fluid leaking from his ear and brui

Discussion in 'USMLE Step 2 CK' started by Guest, Apr 24, 2006.

  1. Guest

    Guest Guest

    Following a car accident, a patient presents with a clear fluid leaking from his ear Which one of the following injuries is most likely?


    1) foramen magnum fracture

    2) fracture of the supraorbital ridge

    3) middle cranial fossa fracture

    4) linear fracture of the vault of skull

    5) ethmoid bone fracture
  2. Guest

    Guest Guest

    Re: a patient with a clear fluid leaking from his ear and b

    i think its middle cranial fossa fracture


  3. Guest

    Guest Guest

    3) middle cranial fossa fracture[/b]
  4. Guest

    Guest Guest

    Here's what Keith Moore has to say about it (Clinically Oriented Anatomy):

    Fractures in the floor of the middle cranial fossa may result in CSF leakage from the external acoustic meatus (CSF otorrhea) if the meninges superior to the middle ear are torn and the tympanic membrane is ruptured. Fractures in the floor of the anterior cranial fossa may involve the cribriform plate of the ethmoid, resulting in CSF leakage through the nose (CSF rhinorrhea). CSF can be distinguished from mucus by testing its glucose level; the glucose level of the CSF reflects that of the blood. CSF otorrhea and rhinorrhea may be the primary indications of a cranial base fracture and increase the risk of meningitis because an infection could spread to the meninges from the ear or nose (Rowland, 2000).

Share This Page