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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.

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  1. During the head impulse test (HIT), a corrective saccade after a rapid head thrust indicates:

    Answer: Reduced VOR gain on the ipsilateral semicircular canal

    A corrective saccade following the head impulse indicates the VOR is insufficient to maintain gaze, reflecting ipsilateral canal hypofunction.

  2. The HINTS exam (Head Impulse, Nystagmus, Test of Skew) is primarily used to differentiate:

    Answer: Peripheral vestibular neuritis from central stroke

    HINTS distinguishes benign peripheral vestibular neuritis from dangerous posterior fossa stroke in acute vestibular syndrome.

  3. In caloric testing, a canal paresis (CP) is calculated using which formula?

    Answer: (RW + RC − LW − LC) / (RW + RC + LW + LC) × 100

    Canal paresis compares the sum of responses from one ear to the other, using Jongkees' formula with all four irrigations.

  4. A patient with Meniere's disease is MOST likely to show which pattern on electrocochleography (ECoG)?

    Answer: Elevated SP/AP ratio above 0.4

    Endolymphatic hydrops in Meniere's disease enlarges the summating potential, raising the SP/AP ratio above the normal threshold of approximately 0.4.

  5. Which finding on video head impulse testing (vHIT) is MOST consistent with superior semicircular canal dehiscence (SSCD)?

    Answer: Normal VOR gain without corrective saccades

    SSCD typically shows normal or even elevated VOR gain on vHIT because the dehiscence creates a third mobile window rather than reducing canal sensitivity.

  6. The subjective visual vertical (SVV) test assesses which aspect of vestibular function?

    Answer: Otolith (utricle) perception of gravitational vertical

    SVV measures the utricular contribution to spatial orientation by asking the patient to align a luminous bar with perceived vertical in darkness.

  7. When interpreting rotary chair sinusoidal harmonic acceleration (SHA) testing, phase lead indicates:

    Answer: The eyes lead the expected compensatory response, suggesting peripheral hypofunction

    Phase lead means the VOR response occurs slightly earlier than expected, a compensatory pattern seen in peripheral vestibular hypofunction at low frequencies.