CSF draining from the nose and ear occurs in which type of skull fracture?

AIIMS Delhi NO - 2017

Medical Surgical Nursing

Easy

Appeared in: AIIMS Delhi NO - 2017

Explanation

A basilar skull fracture is a break in the bone at the base of the skull.
This type of fracture can tear the meninges (the protective layers covering the brain), leading to the leakage of cerebrospinal fluid (CSF).
When CSF leaks from the nose, it is called CSF rhinorrhea; when it leaks from the ear, it is called CSF otorrhea.
Other classic signs associated with this fracture, as shown in the image, are Battle's sign (bruising behind the ear) and raccoon eyes (bruising around the eyes).

Option B: An occipital fracture involves the bone at the back of the skull. It does not typically cross the structures (like the sinuses or middle ear) that would allow CSF to leak from the nose or ears.
Option C: While a temporal bone fracture can sometimes lead to CSF otorrhea if it is extensive and involves the middle ear structures, it is not the most classic or common cause compared to a basilar fracture, which often involves these areas by definition.
Option D: A parietal fracture affects the upper sides of the skull. These fractures are far from the base and do not typically cause CSF leakage from the nose or ears.

Clinical Relevance

Nursing practice connection: Knowing Clinical signs of different types of skull fractures helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
Recognizing the signs of a basilar skull fracture (CSF leak, Battle's sign, raccoon eyes) is critical for early diagnosis and intervention to prevent meningitis.
Nursing interventions for a suspected CSF leak include elevating the head of the bed 30 degrees to reduce intracranial pressure, placing a loose sterile dressing over the site to collect drainage (not packing it), and instructing the patient not to blow their nose.
A simple bedside test for CSF is the 'halo' or 'ring' sign, where a drop of the fluid on gauze will form a central blood spot surrounded by a yellowish ring of CSF.

How to Approach the Question

First, identify the key clinical signs presented in the question: 'CSF draining from the nose and ear.'
Next, analyze the provided image for additional clues. The image shows 'Raccoon eyes' (periorbital ecchymosis) and 'Battle's sign' (retroauricular ecchymosis).
Correlate this cluster of signs (CSF rhinorrhea/otorrhea, Raccoon eyes, Battle's sign) with your knowledge of head injuries.
Recall that this specific combination of signs is the classic presentation of a fracture at the base of the skull.
Evaluate the given options. 'Basilar skull fracture' directly describes a fracture at the base of the skull and is the correct diagnosis for these symptoms.

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