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AN2102 Mod 7 > Blood Flow Occlusions/ Lesions > Flashcards

Blood Flow Occlusions/ Lesions Flashcards

1
Q

What can middle cerebral aa (cortical br) occlusion cause (4)

A
  1. CL paralysis of lower face (lower face gets CL inn) + tongue
  2. CL paralysis of UL (precentral)
  3. CL anesthesia of face, neck UL and trunk (post central gyrus)
  4. Global or receptive aphasia (brocas, wenickes)
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2
Q

What can a ant cerberal aa occlusion (collomarginal occlusion) cause (3)

A
  1. CL paralysis of the LL and perineum (precentral)
  2. Cl anesthesia of LL (postcentral)
  3. Mental confusion (prefrontal cortex)
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3
Q

What can a posterior cerebreal aa occlusion cause (calcimine aa)- (4)

A
  1. Hemianopia of CL visual fields of both eyes
  2. Amnesia (mem loss)
  3. Alexia (inability to read)
  4. Prosopagnosia (inability to recognize faces
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4
Q

Middle cerebreal aa occlusion (lensticulostriate aa) causes (5)

A
  1. CL paralysis of neck, UL, trunk and LL (int cap)
  2. CL anesthesia of the neck, UL, trunk and LL (int cap)
  3. Hemianopia of CL visual fields of both eyes (aa supplies geniculocalcarine axon bundles)
  4. Supreanuclear facial n palsy (genu)
  5. Supranuclear hypoglossal n palsy (CL)
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5
Q

Midbrian periaqueductal grey matter tumour (3)

A
  1. occulomotor n palsy/trochlear n palsy
  2. Abscent light reflex
  3. Vertical gaze palsy
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6
Q

Midbrane Post cerebral aa (benedikt syndrome) (3)

A
  1. CL hemianethesia (medial/spinal lemniscus)
  2. IL CN 3 palsy
  3. Tremor/involuntary movement CL (red nucleus)
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7
Q

Weber syndrome (4)

A
  1. CL paralysis of the face (lower part)
  2. CL paralysis of tongue
  3. CL paralysis of body (corticospinal)
  4. IL CN 3 palsy
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8
Q

Basilar aa occlusion (pontine br) (3/4)

A
  1. IL LMN facial nerve palsy (full half face)
  2. IL paralysis of lat rectus (abducens n)
  3. CL hemiperiesis (med lemniscus)
  4. IF trapazoind body affected- partial BL deafness
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9
Q

When is the only case that there would be total BL deafness

A

If cochlear nuclei was impaired bilaterally

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10
Q

Post spinal aa occlusion

A

Sensory ataxia

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11
Q

Lat medullary syndrome is caused by what

A

PICA occlusion

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12
Q

Lat medulalry syndrome (7)

A
  1. Vertigo (vestibular nuc)
  2. Nystagmus (MLF)
  3. IL paralysis of soft palate, pharynx + vocal cord (ambigous nuc)
  4. CL loss of pain/themal (spinal lem)
  5. IL loss of pain/thermal of face (spinal nuc of trigemincal)
  6. IL horners
  7. Incoordination of movement (inf cerebellar peduncle)
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13
Q

med medullar syndrome is caused by

A

Vert aa occlusion

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14
Q

Medial medullary syndrome (3)

A
  1. CL hemiplegia (pyramidal)
  2. CL loss of fine touch, vib, prop (med lemniscus)
  3. IL hypoglossal palsy (LMN)
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15
Q

What would basillar aa occlusion cause and what would not be affected

A

locked in syndrome

-Occulomotor/trochlear n not affected

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16
Q

What would labyrinthe aa occlusion cause

A

Supplies vestibulocochlear

  • IL deafness
  • Vertigo with tendency to fall towards side of prob
17
Q

What does poliomyelitis affect and cause

A

Destruction of ventral horn

-LMN flaccid paralysis and mm atrophy in the respective myotomes

18
Q

What is ALS caused by

A

UMN sydrome with random dymelenation in Lat corticospinal tracks which will eventually cause LMN syndrome by affecting ventral horns

19
Q

What does syringomyeliaaffect and what does it cause

A

Cystic enlargement of central canal (affecting ant decussion)

  • BIlateral loss of pain + temp in 1/2 dermatomes (cape pattern)
20
Q

Central cord syndrome and what is spared

A
  • BL loss of pain temp crude touch below level of lesion w lumbosacral sparing
  • BL LMN syndrome/flaccid paralysis in segment of lesion
  • BL UMN spastic paralysis below level of lesion w sacral sparing
21
Q

Ant spinal aa occlusion (3)

A
  • BL loss of pain, temp, crude touch (loss of antlat system)
  • BL LMN sdr/flacid paralysis @ lvl of lesion (ventral horns)
  • BL UMN spastic paralysis below lvl of lesion
22
Q

Spinal cord hemisection (5)

A
  1. IL anethesia in segemt (dorsal horn)
  2. IL loss of fine touch/vib/proprioception below lvl
  3. CL loss of pain/temp/crude touch 2/3 lvls below
  4. IL LMN flacid paralysis (Ventral horn)
  5. IL UMN spastic paralyssi belwo lvl of lesion (lat corticospinal)

AN2102 Mod 7 (13 decks)

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