Vertigo physical examination: Difference between revisions
Jump to navigation
Jump to search
No edit summary |
No edit summary |
||
Line 3: | Line 3: | ||
{{CMG}} | {{CMG}} | ||
== Physical Examination == | == Physical Examination == | ||
===Ear | ===Ear=== | ||
====Vestibular Exam==== | ====Vestibular Exam==== | ||
=====Provocative Maneuvers===== | =====Provocative Maneuvers===== | ||
Line 32: | Line 32: | ||
# 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 | ===Eye=== | ||
====Nystagmus==== | ====Nystagmus==== | ||
=====Peripheral Lesions===== | =====Peripheral Lesions===== | ||
Line 47: | Line 47: | ||
===Neurologic | ===Neurologic=== | ||
* Cranial nerves | * Cranial nerves | ||
* Motor/sensory deficits, | * Motor/sensory deficits, |
Revision as of 16:46, 1 March 2013
Vertigo Microchapters |
Diagnosis |
---|
Treatment |
Case Studies |
Vertigo physical examination On the Web |
American Roentgen Ray Society Images of Vertigo physical examination |
Risk calculators and risk factors for Vertigo physical examination |
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
- 2-20 sec latency before onset of nystagmus
- Duration of nystagmus < 1 minute
- Fatigues with repetition of maneuver
- One type nystagmus (upbeat and torsional)
- Severe vertigo (spinning toward normal ear)
- Central lesion:no latency before onset of nystagmus
- Duration of nystagmus > 1 minute
- No fatiguability
- Direction may change with head position
- 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
- 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
- Identification of < 20% of 10 2-syllable words whispered into affected ear suggests retrocochlear lesion (acoustic neuroma)
- Identification of > 70% of words = cochlear disease
- Identification of 20-70% = indeterminate (audiology)
- 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