Term
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Definition
Clarify the meaning of "dizziness" Episodic vs. continuous Duration Position triggered (head or body) Assoc. inner ear symptoms Assoc. neurological symptoms |
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Term
Three most common peripheral vestibular disorders |
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Definition
Benign paroxysmal positional vertigo (BPPV) Vestibular neuritis Endolymphatic hydrops (Meniere's dx) |
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Term
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Definition
- Brief episodes of vertigo (5-10 s) when head is moved in the plane of the canal - Vertigo stops when head is still - Verticl worse when pt recumbent - No hearing loss, neuro sx - Normal gait |
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Term
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Definition
- 50+ years - Head trauma - Prior inner ear injury - Prolonged recumbency - Migraine w/ aura |
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Term
Peripheral nystagmus Vs. Central nystagmus 5 |
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Definition
Unidirectional - in the plane of the canal (multi) Mixed nystagmus (not compatible w/ struct) Inhibit with visual fixation (not inhibited) Normal ocular control (abnormal: ex. smooth) Normal neurological exam (abnormal) |
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Term
Endolymphatic hydrops - Tx 3 medical, 4 surgical |
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Definition
Medical: Diuretic (Dyazide, HCTZ, ACTZ), Salt restriction, <2g day, Stress reduction Surgical: labyrinthectomy, vestibular nerve section, intratympanic gentamycin injection, endolymphatic shunt |
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Term
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Definition
1. Clinical history of isolated prolonged vertigo lasting days with gradual improvement 2 .Vestibular function testing showing caloric paresis 3. Positive head thrust test showing delayed correction of eye movement for head movement |
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Term
Endolymphatic hydrops - Dx |
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Definition
At least two episodes of vertigo > 20 mins Audiometrically confirmed low freq hearing loss Tinnitus or fullness |
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