Neuro Vestibular

Question 1

Semicircular Canals

Answer 1

Detect angular rotation movement

Horizontal - Located 20-30 degrees up when head is upright
Posterior- 45 degrees from midline, midway between sagittal and coronal plane
Anterior- 45 degrees from midline, midway between sagittal and coronal plane

Question 2

Otolithic Organs

Answer 2

Utricle: Senses horizontal acceleration
Saccule: Senses vertical movements

Question 3

Benign Paroxysmal Positional Vertigo (BPPV)

Answer 3

Periferal vestibular disorder order; most common cause of vertigo in adults

10-64 cases per 100,000 persons; women outnumber men by a ratio of 1.6:1

Question 4

Nystagmus

Answer 4

Rapid, uncontrollable eye movements, with a slow phase and fast phase

Question 5

Meniere’s Disease

Answer 5

Abnormal endolymph fluid pressures
- Hearing loss tinnitus; vertigo
- Slow chronic onset
-According to established guidelines, a definite diagnosis requires the follow

Question 6

Vestibular Neuritis

Answer 6

Viral Infection is common and usually affect the vestibular nerve unilaterally- dizziness/vertigo, nausea vomiting present

Question 7

Labyrinthitis

Answer 7

Perfipheral vestibular disorder; causes both inflammation to both branches of CN8

Question 8

Perilymphatic Fistula

Answer 8

Perilymph to leak from the inner ear into the middle ear

Question 9

Acoustic Neuroma

Answer 9

Unilateral sensorineural hearing loss
Tinnitus
Dizziness & Imbalance
Feeling of fullness in the affected ear

Question 10

Primary Symptoms

Answer 10

Persistent Motion Sensation: Typica;;y described as rocking, swaying, bobbing or floating