ABA ABA Vestibular & Balance Assessment 1

Question 1

Which test is considered the gold standard for evaluating semicircular canal function in vestibular assessment?

Accepted Answer

Caloric irrigation testing

Answer

Caloric irrigation testing selectively stimulates each horizontal semicircular canal and is considered the gold standard for identifying unilateral vestibular weakness.

Question 2

The Dix-Hallpike maneuver is the primary diagnostic test for which vestibular disorder?

Accepted Answer

Benign Paroxysmal Positional Vertigo (BPPV)

Answer

The Dix-Hallpike maneuver provokes the characteristic torsional-upbeat nystagmus associated with posterior canal BPPV.

Question 3

What does a canal paresis value greater than 25% indicate on caloric testing?

Accepted Answer

Unilateral vestibular weakness

Answer

A canal paresis (Jongkees formula) exceeding 25% is considered significant and indicates reduced function on the weaker side.

Question 4

Which nystagmus characteristic most strongly suggests a central rather than peripheral vestibular lesion?

Accepted Answer

Direction-changing gaze-evoked nystagmus

Answer

Direction-changing gaze-evoked nystagmus (nystagmus that beats right on right gaze and left on left gaze) is a hallmark of central vestibular pathology.

Question 5

The video Head Impulse Test (vHIT) assesses function of which reflex?

Accepted Answer

Vestibulo-ocular reflex (VOR)

Answer

vHIT measures the gain of the vestibulo-ocular reflex by detecting corrective saccades following rapid head impulses.

(ABA) American Board of Audiology Practice Test

(ABA) American Board of Audiology Practice Test

ABA ABA Vestibular & Balance Assessment 1