Vertigo physical examination: Difference between revisions

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{{CMG}}
{{CMG}}
== Physical Examination ==
== Physical Examination ==
===Ear Examination===
===Ear===
====Vestibular Exam====
====Vestibular Exam====
=====Provocative Maneuvers=====
=====Provocative Maneuvers=====
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# Identification of 20-70% = indeterminate (audiology)
# Identification of 20-70% = indeterminate (audiology)
# Audiometry referral to confirm hearing loss
# Audiometry referral to confirm hearing loss
===Eye Examination===
===Eye===
====Nystagmus====
====Nystagmus====
=====Peripheral Lesions=====
=====Peripheral Lesions=====
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===Neurologic Exam===  
===Neurologic===  
* Cranial nerves
* Cranial nerves
* Motor/sensory deficits,  
* Motor/sensory deficits,  

Revision as of 16:46, 1 March 2013

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Physical Examination

Ear

Vestibular Exam

Provocative Maneuvers
Dix-Hallpike (Baranay): Patient Sitting on Exam Table
  • Lies down with head extending over table edge, 45° to one side
  • Position change can occur slowly; should be held for > 30 sec
  • Repeat with head turned 45° to opposite side, then without turning head
  • Peripheral lesion
  1. 2-20 sec latency before onset of nystagmus
  2. Duration of nystagmus < 1 minute
  3. Fatigues with repetition of maneuver
  4. One type nystagmus (upbeat and torsional)
  5. Severe vertigo (spinning toward normal ear)
  • Central lesion:no latency before onset of nystagmus
  1. Duration of nystagmus > 1 minute
  2. No fatiguability
  3. Direction may change with head position
  4. Less severe, if any, vertigo

Hearing

  • Test gross hearing with whisper/finger tap
  • If asymmetric hearing loss:
  • Rinne test to confirm sensorineural (vs. conductive) loss
  1. Air>bone conduction with sensorineural loss
  • Tympanum membrani (TM) exam to rule out acute or chronic otitis media as etiology
  • Speech discrimination to assess cochlear or retrocochlear
  1. Identification of < 20% of 10 2-syllable words whispered into affected ear suggests retrocochlear lesion (acoustic neuroma)
  2. Identification of > 70% of words = cochlear disease
  3. Identification of 20-70% = indeterminate (audiology)
  4. Audiometry referral to confirm hearing loss

Eye

Nystagmus

Peripheral Lesions
  • Horizontal +/- torsional component, never vertical
  • Fast phase toward the normal ear
  • Never reverses direction
  • Suppressed by visual fixation
  • (Prevent fixation via Frenzel lenses -> increased nystagmus)
Central Lesions
  • Can be in any direction
  • May reverse direction when patient looks in direction of slow phase
  • Not suppressed by visual fixation


Neurologic

  • Cranial nerves
  • Motor/sensory deficits,
  • Deep tendon reflexes (DTRs)
  • Cerebellar signs?
  • Central lesion

Romberg

  • Unilateral peripheral lesion -> patient leans/falls to side of lesion, but able to walk
  • Acute cerebellar lesion -> patient unable to walk without falling; variable direction of fall

References

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