Brainstem Lesions Flashcards Preview

Neuro II > Brainstem Lesions > Flashcards

Flashcards in Brainstem Lesions Deck (20)
Loading flashcards...
1

1. Ipsilateral tongue paralysis
Ipsilateral tongue atrophy
2. Contralateral spastic hemiplegia

a12h
1. Hypoglossal nerve
2. CST

2

1. Ipsilateral tongue paralysis
Ipsilateral tongue atrophy
2. Contralateral spastic hemiplegia
3. Contralateral body prop/2pt/vibration

a12h + ML
1. Hypoglossal nerve
2. CST
e. ML

3

1. Ipsilateral paralysis of lateral gaze and/or internal strabismus
2. Contralateral spastic hemiplegia

a6h
1. Abducens nerve
2. CST

4

1. Ipsilateral paralysis of lateral gaze and/or internal strabismus
2. Contralateral spastic hemiplegia
3. Bell's Palsy (sundown)

Millard Gubler - a6h + 7
1. Abducens nerve
2. CST
3. Facial nerve

5

1. Ipsilateral paralysis of lateral gaze and/or internal strabismus
2. Contralateral loss of proprioception/2pt/vibration
3. Uncoordinated horizontal gaze
4. ??Ipsilateral CN nuclei >> Uvula deviation to normal side, tongue deviation ot lesioned side
5. Contralateral spastic hemiplegia

a6h + ML (Syndrome of Foville)
1. Abducens nerve
2. ML
3. MLF --> INO (CN6 and 3)
4. CBT - crossed (ipsilateral)
5. CST

6

1. ipsilateral loss of sensation to face and scalp, ipsilateral paralysis of muscles of mastication
2. contralateral spastic hemiplegia

a5h
1. trigeminal (V1) nerve
2. CST

7

crossed CBT - ipsilateral or contralateral?
level or decussation?

ipsilateral
medulla

8

areas of uncrossed CBT?

midbrain and pons

9

nuclei involved in CBT

nucleus ambiguus - uvula deviates toward normal
hypoglossal nuclei - tongue deviates toward lesion

10

INO
R nucleus of CN6 contracts ___ LR >> simulates __ nucleus of CN3 via __MLF

MLF,
Right nucleus of CN6 contracts Right LRmuscle >> simulates Left nucleus of CN3 (left MRmuscle) via Left MLF

11

1. ipsilateral loss of sensation to face and scalp, ipsilateral paralysis of muscles of mastication
2. contralateral spastic hemiplegia
3. ??Contralateral CN nuclei >> supranuclear facial palsy, hypoglossal nucleus, nucelus ambiguus, abducens nucelus

a5h and Dorsal extension
1. Triennial nerve
2. ML
3. uncrossed CBF

12

1. ipsilateral external strabismus, pupil dilation, complete ptosis
2. contralateral spastic hemiplegia
3. contralateral resting tremor
4. supranuclear facial palsy

a3h (Weber's Syndrome)
1. occulomotor nerve
2. CST
3. Substantia nigra
4. uncrossed CBT

13

1. Dysarthria, dysphagia, uvula deviation to normal side
2. loss of body contralateral pain/temp
sometimes: contralateral loss of 2pt/prop and loss of gag reflex+ipsilatereal anesthesia of palate/pharynx

Lesion of Nucleus Ambigus + SL
1. Nucelus ambiguus
2. ML
3. sometimes - ML + solitary nucleus

14

Name for:
1. loss of contralateral pain/temp
2. loss of ipsilateral pain/temp from 1/2 of face

alternating hemianalgesia

15

alternating hemianalgesia

Wallenberg Syndrome = Lateral MEdullary Syndrome
PICA

16

Deaf
Bell's palsy
Alternating hemianalgesia
intention tremors

Cerebellopontine Angle syndrome

17

what is the cause of cerebellopontine syndrome?

Tumor of posterior fossa = comrpesses pons, cerebellum, medulla

18

1. External strabismus, pupillary dilation, complete ptosis
2. Contralateral loss of proprioception/2pt
3. intention tremor/spasticity, ataxia, etc.

Benedikt's Syndrome (leision of midbrain tegmentum)
1. CN3
2. ML
3. Red nuc/seperior cerebellar peducncles/midbrain tegmentum

19

paralysis of upward gaze caused by what and what structure is affected

Parinaud Syndrome -
superior colliculus compressed by pineal tumor or varix of Great Vein of Galen

20

behavioral changes, crawling ant sensation

Thalamic Syndrome