Exam Preview for 40958: Fundamentals of Video Head Impulse Test

Fundamentals of Video Head Impulse Test – Lesson 3: Clinical Applications and Case Studies

Please note: exam questions are subject to change.

1. Which of the following characteristics best defines covert saccades in a vHIT test? Corrective eye movements occurring after the head impulse Fast, compensatory eye movements occurring during the head impulse Slow drift of the eyes in the direction of the head movement Voluntary saccades initiated by the patient
2. In patients with acute vestibular neuritis, which of the following vHIT findings is most likely observed? Normal VOR gain with absent saccades Bilateral VOR gain reduction with symmetrical overt saccades Unilateral VOR gain reduction with overt and/or covert saccades High VOR gain with disorganized saccades
3. Which vHIT parameter helps differentiate peripheral vestibular dysfunction from central compensation or test artifact? Vertical canal gain> 1.1 Absence of overt saccades in both directions Gain asymmetry combined with consistent refixation saccades Increased eye velocity with decreased head velocity
4. What is the clinical implication of a patient showing repeatable covert saccades despite normal gain values? The test is invalid and should be repeated Indicates no vestibular deficit Suggests a compensated vestibular hypofunction Reflects central oculomotor dysfunction
5. A patient presents with episodic vertigo and postural instability. vHIT shows low gain in the lateral canal and consistent overt saccades on the left side. What is the most appropriate clinical interpretation? Central positional vertigo Left-sided peripheral vestibular hypofunction Age-related presbyvestibulopathy Vestibular migraine with normal VOR