# A nurse is assessing a client diagnosed with labyrinthitis. Which assessment finding would be most characteristic of this condition?

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## 문제

A nurse is assessing a client diagnosed with labyrinthitis. Which assessment finding would be most characteristic of this condition?

## 보기

1. Severe vertigo with nausea and vomiting **✔ 정답**
2. Bilateral hearing loss with ear pain
3. Purulent drainage from both ears
4. High fever with neck stiffness

**정답: 1**

## 해설

Labyrinthitis primarily affects the vestibular system, causing severe vertigo with nausea and vomiting as hallmark symptoms. Other options describe findings more typical of otitis media, meningitis, or other ear conditions.

## 심화 해설

Understanding Labyrinthitis

Labyrinthitis is an inflammation of the membranous labyrinth, a delicate structure within the inner ear responsible for both hearing and balance [1]. When this structure becomes inflamed, usually due to a viral or bacterial infection, it sends chaotic signals to the brain, creating a mismatch between what the vestibular system senses and what the visual and proprioceptive systems report. This pathophysiological process directly produces the hallmark symptoms of the condition.

Analysis of the Correct Answer

The most characteristic finding is severe vertigo with nausea and vomiting. The inflammatory process disrupts the vestibular apparatus, leading to an acute, often incapacitating, sensation of spinning (vertigo) [1,3]. This intense vestibular disturbance triggers the brainstem's vomiting center and chemoreceptor trigger zone, resulting in severe nausea and vomiting [1]. A case report of an adolescent with viral labyrinthitis explicitly documents the abrupt onset of vertigo and nausea as a primary presentation [2]. This symptom cluster is a clinical emergency because it can mimic a central cause like a cerebrovascular accident (CVA), requiring careful evaluation to rule out a stroke [1,4].

Analysis of Incorrect Answers

- Bilateral hearing loss with ear pain: This is incorrect because labyrinthitis typically presents with unilateral hearing symptoms, not bilateral. The condition is characterized by sudden sensorineural hearing loss (SNHL) or tinnitus in one ear, as the inflammation is usually localized [1,2]. While a middle-ear effusion might be present on otoscopy in some cases, significant ear pain is not the defining characteristic [2].

- Purulent drainage from both ears: This finding is more indicative of external otitis or a ruptured tympanic membrane from severe acute otitis media, not labyrinthitis itself. While labyrinthitis can be a complication of acute otitis media, the primary assessment finding for labyrinthitis is the sudden onset of vestibular and cochlear symptoms, not purulent drainage [3].

- High fever with neck stiffness: This presentation is a classic red flag for meningitis, a central nervous system infection. While a nurse must differentiate labyrinthitis from a CVA, the presence of nuchal rigidity and high fever points strongly toward meningitis, not a peripheral vestibular disorder like labyrinthitis [1]. A thorough neurological examination is essential to exclude such central causes [2].References (research sources)

- [1]LabyrinthitisResearch articleBarkwill D, Winters R, Arora R. (2026)

- [2]Sudden Unilateral Hearing Loss and Vertigo in an Adolescent: Viral Labyrinthitis Versus Idiopathic Sudden Sensorineural Hearing Loss.Research articleSpitz VH, Smock JN, DeBonaventura A, Rivers K. (2026) · DOI: 10.7759/cureus.101445

- [3]Labyrinthitis Complicating Acute Otitis Media in an 18-Month-Old Infant.Research articleBoualam Y, Sbai A, Benfadil D, Lachkar A, El Ayoubi El Idrissi F. (2025) · DOI: 10.7759/cureus.88823

## 임상 시나리오

Labyrinthitis: Clinical Triage & AssessmentDifferentiating peripheral vertigo from central stroke
The classic triad of acute unilateral vestibular loss is severe vertigo, nausea/vomiting, and nystagmus. The vertigo is often described as a rotational sensation exacerbated by head movement.

Perform the HINTS exam (Head Impulse, Nystagmus, Test of Skew) in patients with continuous vertigo. A positive head impulse test (corrective saccade) strongly suggests a peripheral cause like labyrinthitis.

CautionLabyrinthitis is a diagnosis of exclusion. Central causes like cerebellar stroke can mimic it. The presence of vertical nystagmus, skew deviation, or inability to ambulate are red flags for a central lesion requiring immediate neuroimaging.

## 핵심 개념

- **Labyrinthitis** — Inflammation of the inner ear labyrinth affecting both the cochlea (hearing) and vestibular system (balance), often presenting with acute vertigo and unilateral hearing loss.
- **Vertigo** — A false sensation of spinning or movement, often severe and accompanied by nausea and vomiting, resulting from vestibular system dysfunction.
- **Acute Vestibular Syndrome (AVS)** — A clinical syndrome of acute-onset, continuous vertigo lasting days, with nausea, vomiting, and gait instability, commonly caused by labyrinthitis or vestibular neuritis.

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