NeuroDiseasesDrugs_Lab7_Lab8_BrainstemLesions_CranialNerves.txt

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Anonymous
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86801
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NeuroDiseasesDrugs_Lab7_Lab8_BrainstemLesions_CranialNerves.txt
Updated:
2011-05-19 18:36:42
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BrainStem Lesion
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Description:
BrainStem Lesion
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  1. Benedikt's Syndrome
    occlusion of PCA or rostral basillar artery. cerebellar ataxia and dysmetria (red nucleus). Ipsilater occulomotor paralysis-3rd nerve palsy [droppy eyelid (ptosis), dilated pupil, pupil abducted and depressed, loss of pupillary and accomodation reflex]. Contralateral paralysis of leg, trunk, and arm (corticospinal tract before decussation). Contralateral paralysis of face and shoulder (corticobulbar before decussation).
  2. Weber's Syndrome
    Occlusion of PCA or rostral basillar artery. Ipsilateral occulomotor paralysis/3rd nerve palsy. Contralateral paralysis of leg, arm and trunk (corticospinal tract before decuss). Contralateral paralysis of face and shoulder (corticobulbar tract). *NO cerebellar ataxia like Benedikt's cus red nucleus is not affected.
  3. Parinaud's Syndrome
    Hydrocephalus or pineal tumor. paralysis of upward gaze (compressed CN III and CN IV)
  4. Medial Inferior Pontine
    Occlusion of basilar and its paramedian branches. Ipsilateral paralysis of lateral rectus (CN 6). Limb and gait ataxia (pontine nuclei). Contralateral paralysis of leg and trunk (corticospinal tract before decuss). COntralateral loss of propioception and vibration from body (ML-Dorsomedial after cross). **** COntralateral weakness of lower face (corticobulbar but only if damage is rostral to facial nucleus)
  5. Lateral Inerior Pontine
    Occlusion of AICA (AKA AICA syndrome). Contralateral loss of pain and temperature from body (spinothalamic tract). Cerebellar ataxia (MCP). Ipsilateral loss of pain and temp from face (trigeminal nucleus). Nystagmus, nausea, vomiting and vertigo and central deafness (vestibular nucleus). Ipsilateral paralysis of lower face, taste from anterior 2/3, loss of corneal and stapedial reflex (facial nucleus). Ipsilateral Horner's SYndrome (pupillary constriction, enopthalmos -sunken eyelid, anhydrous -loss of sweating on one side of face, upside-down ptosis).
  6. Locked-In
    Only hearing, vertical eye movements (due to riMLF) and consciousness intact. Complete quadeiplegia
  7. Medial Medullary Syndrome
    Occlusion of Anterior SPinal Artery. COntralateral paralysis trunk and extremeties (corticospinal tract). Contralateral loss of proprioception and vibration (ML). Ipsilateral paralusis of tongue with fasiculations and atrophy (LMN CN 12).
  8. Wallenberg
    Occlusion of vertebral or PICA (AKA Lateral Medullary or PICA syndrome). Contralateral loss of pain and temp from trunk and extremeties (spinothalamic.) Ipsilateral loss of pain and temp from face (Spinotrigeminal tract). Ipsilateral Horner's Syndrome. Ipsilateral Nucleus Ambiguus Signs (loss of gag, hoarsness of voice, uvula deviation). Ipsilateral Cerebellar Signs (nystagmus, nausea, vomiting, vertigo, ataxia, dysmetria). NOTE: only thing contra is pain and temp loss of body

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