AND FULL SOLUTION
◉ You are performing the left Dix Hallpike maneuver on a 62 yo. She
complains of immediate onset vertigo and her symptoms last longer
than a minute. During the maneuver you see downbeating, which of
the following interventions would be most appropriate?
a. Liberatory maneuver (Semont), head turned right bringing her
into left sidelying first
b. Liberatory maneuver (Semont), head turned left bringing her into
left sidelying first
c. Liberatory maneuver (Semont), head turned right bringing her
into right sidelying first
d. Liberatory maneuver (Semont), head turned left bringing her into
right sidelying first. Answer: c. Liberatory maneuver (Semont), head
turned right bringing her into right sidelying first
for L Anterior Cupulolithiasis you would
,perform Rotation of head 45º towards unaffected side (R) w/
sidelying on unaffected side (R) ((nose down)) then move into
affected side sidelying (L) ((nose up))
◉ You are performing the right Dix Hallpike maneuver on a 55 yo
male. He complains of delayed onset vertigo with symptoms lasting
less than a minute. During the maneuver you notice downbeating
nystagmus. Which of the following is most likely the cause?
a. left anterior canalithiasis
b. left anterior cupulolithiasis
c. right anterior canalithiasis
d.. right posterior cupulolithiasis. Answer: c. right anterior
canalithiasis
◉ During a dix hallpike test, the eyes will beat towards the ____ side
a. unaffected
b. affected
c. unaffected and affected. Answer: b. affected
rotation/torsion toward affected side
,◉ Which of the following complaints is MOST indicative of a central
vestibular disorder?
a. hearing loss
b. nausea and vomiting
c. downbeating nystagmus
d. world bouncing up and down. Answer: d. world bouncing up and
down
oscillopsia
◉ Which of the following is the sensory receptor of the otolith?
a. semicircular canal
b. ampulla
c. cupula
d. macula. Answer: d. macula
◉ The ratio of head movement to eye movement during a normal
VOR is:
a. 1:1
, b. 1:2
c. 2:1
d. 4:1. Answer: a. 1:1
Head movement to the left causes an equal and opposite eye
movement to the right (1:1 gain)
◉ Which of the following is NOT part of the peripheral sensory
apparatus?
a. saccule
b. utricle
c. semicircular canals
d. vestibular nuclei. Answer: d. vestibular nuclei
◉ Which of the following detects vertical linear movement?
a. saccule
b. utricle
c. posterior semicircular canal
d. anterior semicircular canal. Answer: a. saccule