Which of the following injury would be suspected in a patient who have otorrhea?

NORCET 3 - 2022 (Shift-1)

Medical & Surgical Nursing

Easy

Appeared in: NORCET 3 - 2022 (Shift-1)

Explanation

Otorrhea, or drainage from the ear, in the context of a head injury is highly suggestive of a basilar skull fracture.
This type of fracture can tear the dura mater, the protective covering of the brain, allowing cerebrospinal fluid (CSF) to leak out through the ear canal.
Other classic signs associated with basilar skull fractures include Battle's sign (bruising behind the ear), raccoon eyes (bruising around the eyes), and hemotympanum (blood behind the eardrum).
The presence of clear, watery drainage that tests positive for glucose (the 'halo sign' on gauze) is a strong indicator of a CSF leak.

Option A: An epidural hematoma is an arterial bleed between the dura and the skull. Its classic presentation is a 'lucid interval' followed by rapid deterioration, not CSF leakage.
Option B: A subdural hematoma is a venous bleed under the dura. It typically has a more gradual onset of neurological symptoms like headache and confusion, especially in older adults. It does not cause otorrhea.
Option C: A simple ruptured eardrum can cause ear drainage, but the discharge is typically bloody or purulent, not the clear, watery fluid characteristic of a CSF leak.

Visual 1: Illustration - A diagram showing a fracture at the base of the skull with a tear in the meninges, illustrating how CSF can leak into the ear canal.
Visual 2: Clinical Photo - An image of Battle's sign, showing the characteristic ecchymosis over the mastoid process behind the ear.
Visual 3: Clinical Photo - An image of 'raccoon eyes,' demonstrating periorbital ecchymosis associated with basilar skull fractures.

Clinical Relevance

Nursing practice connection: Use the key finding related to Clinical signs of head injuries, specifically basilar skull fracture to guide bedside assessment, documentation, and the next nursing action.
Recognizing otorrhea as a potential CSF leak is a critical nursing assessment skill. It signals a high-risk injury that requires immediate medical attention and specific precautions.
A key bedside test is the 'halo sign.' Allowing the drainage to drip onto a 4x4 gauze pad; if CSF is present, the blood will coalesce in the center, and a yellowish ring of CSF will form around it.
Nurses must prevent infection by avoiding any packing of the ear or nose and instructing the patient not to blow their nose. The insertion of a nasogastric tube is absolutely contraindicated as it could pass through the fracture into the brain.

How to Approach the Question

First, identify the key clinical sign presented in the question: 'otorrhea' (drainage from the ear).
Next, consider the context: a patient with an unspecified 'injury,' implying trauma.
Correlate the sign with the potential diagnoses. Ask yourself, 'In a trauma patient, what is the most serious cause of clear drainage from the ear?'
Recall or deduce that clear drainage suggests cerebrospinal fluid (CSF), which points to a breach in the skull and meninges.
Evaluate the options: Epidural and subdural hematomas are bleeds inside the cranium but don't typically cause external leakage. A ruptured eardrum causes bloody or purulent discharge. A basilar skull fracture directly explains the CSF leak.
Select the option that best explains the combination of trauma and CSF otorrhea.

Concept Tested & Keywords

Concept Tested: Clinical signs of head injuries, specifically basilar skull fracture.
Stem keywords: injury, patient, otorrhea
Lead-in keywords: Which
Clinical cues: Otorrhea (ear drainage) after trauma is a red flag for a serious underlying injury.

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