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9 Cards in this Set
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What can central disorders of ocular motility at the brainstem level do for us?
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It can be diagnostic
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Can both specific and non specific causes be diagnostic?
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Yes
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What are the 4 medullary syndromes discussed in class?
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1. Lateropulsion
2. Wallenberg Syndrome 3. Oculopalatal Tremor 4. Paramedian Medullary Lesion |
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What is lateropulsion?
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The sensation of body and eyes being pulled to one side
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What should you look for in the eyes that would indicate lateropulsion?
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Eyes that deviate to that side and UPBEAT nystagmus
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What non-ocular signs are also seen with lateropulsion?
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Ataxia of one arm and leg on the same side as lateropulsion
Vertigo if vestibular nucleus is involved Hiccups? |
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What structures are affected in lateropulsion?
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MVN - medial vestibular nucleus
IVN - inferior vestibular nucleus ICP - Inferior cerebellar peduncle TN - spinal nucleus of trigeminal nerve and tract STT - spinothalamic tract NA - nucleus amgibuus |
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What might help this patient with lateropulsion to get midline back to normal?
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Yoked prisms with base toward the side that they are pulled toward.
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What is Wallenberg Syndrome?
What type of lesion causes it? |
Ipsilesional skew deviation and lateropulsion of fixations and saccades
Lesion of dorsolateral medulla. |
