Vestibulocochlear (VIII) Nerve

Vestibulocochlear (VIII) Nerve

Vestibulocochlear (VIII) Nerve Unilateral sensorineural deafness tinnitus loud noise Ménière's disease Pagets disease Herpes zoster neurofibroma acoustic neuroma brainstem CVA lead aminoglycosides furosemide & aspirin

Vestibulocochlear (VIII) Nerve Oculocephalic reflex vestibular symptoms vertigo is an illusion of motion in the form of a spinning or whirling sensation) It may be associated with Nausea, vomiting, oscillopsia The presence of associated unilateral hearing loss and tinnitus or fullness in the ear suggests ear pathology. Signs and symptoms referable to the brainstem, CNs, or cerebellum are indicative of a central lesion

Nystagmus To and fro movement of the eye due to defective control system of vision. Jerk Pendular

Vertigo Physiologic Pathologic Seasickness Extreme extension spin Visual Cerebellar Vestibular (Labyrinthine) Unilateral Labyrinthitis Trauma Ischemia Bilateral Alcohol drugs

Benign paroxysmal position vertigo Nystagmus (in supine with the head turned to the affected ear Causes tiny fragments of debris in the inner ear labyrinth drug strokes tumors Recurrent intense dizziness with a spinning sensation and unsteadiness when moving the head in certain directions (recumbent head position)

Benign paroxysmal position vertigo Nystagmus peripheral central Latency 3 – 40 sec immediat e Fatigability yes no Habituation direction uindirecti on indirectio n vertical never May be Visual fixation Inhibits vertigo Not inhibited CNS abnormality none common

Benign paroxysmal position vertigo Treatment Epley maneuver Antihistamine (meclizine, prmethazine) Benzodiazepine(diazepam, clonazepam) Phenathiazines (prochlorperazine