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Assessment & Diagnosis of Vestibular Disorders Flashcards

7 cards from real CVT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Assessment & Diagnosis of Vestibular Disorders flashcards as text

  1. Cervical vestibular evoked myogenic potentials (cVEMPs) assess the function of which end organ?

    Answer: Saccule via the inferior vestibular nerve

    cVEMPs are sound-evoked inhibitory potentials recorded from the sternocleidomastoid muscle, reflecting saccular and inferior vestibular nerve integrity.

  2. Ocular vestibular evoked myogenic potentials (oVEMPs) primarily evaluate which structure?

    Answer: Utricle and superior vestibular nerve

    oVEMPs, recorded from extraocular muscles beneath the eyes, reflect excitatory utricular input transmitted via the superior vestibular nerve.

  3. A 45-year-old presents with low-frequency, fluctuating sensorineural hearing loss, aural fullness, tinnitus, and episodic vertigo lasting 20 minutes to 12 hours. The MOST likely diagnosis is:

    Answer: Meniere's disease

    Meniere's disease is characterized by the classic tetrad: episodic vertigo, fluctuating low-frequency SNHL, tinnitus, and aural fullness.

  4. On electronystagmography (ENG), direction-fixed horizontal nystagmus that is suppressed by fixation and increases in darkness is MOST consistent with:

    Answer: Peripheral vestibular lesion

    Direction-fixed nystagmus that obeys Alexander's law and is suppressed by fixation is the hallmark of peripheral vestibular pathology.

  5. The 'supine roll test' differentiates geotropic from apogeotropic horizontal canal BPPV. In APOGEOTROPIC horizontal canal BPPV, nystagmus beats:

    Answer: Away from the ground (apogeotropic) with the affected ear down

    Apogeotropic horizontal canal BPPV is caused by cupulolithiasis; debris attached to the cupula deflects it away from the ground, producing nystagmus beating toward the ceiling.

  6. A patient reports oscillopsia while walking. Which test BEST quantifies dynamic visual acuity loss due to vestibular hypofunction?

    Answer: Dynamic Visual Acuity (DVA) test during head shaking

    The DVA test measures the drop in visual acuity during controlled horizontal head oscillations, directly quantifying VOR insufficiency that causes oscillopsia.

  7. In the assessment of Persistent Postural-Perceptual Dizziness (PPPD), which characteristic feature distinguishes it from an active peripheral vestibular lesion?

    Answer: Non-spinning dizziness triggered by upright posture and visual motion persisting >3 months

    PPPD is a functional vestibular disorder defined by chronic non-vertiginous dizziness, unsteadiness, and visual motion sensitivity in upright postures for ≥3 months without active vestibular lesion signs.