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Flashcards in Brainstem Infarcts Deck (4)
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1

Name the artery, affected structures, and associated deficits for the following syndrome:

Lateral medullary plate syndrome aka Wallenburg syndrome

Artery: Vertebral or PICA

Affected structures:

1. Inferior cerebellar peduncle --> ipsilateral gait and limb ataxia (damage to reticulospinal tract, an ipsilateral pathway), nystagmus (damage to vestibular nuclei inputs and outputs)

2. Solitary tract and nucleus --> loss of taste sensation

3. Nucleus ambiguus --> loss of motor for IX, X (dysphagia, hoarseness)

4. Spinal trigeminal tract --> no pain and temp. sensation from the ipsilateral face

5. Spinothalamic tract --> no pain and temp. sensation from the contralateral body

6. Damage to hypothalamospinal (sympathetic control) fibers --> Horner's syndrome 

2

Name the artery, affected structures, and associated deficits for the following syndrome:

Medial medullary plate syndrome

Artery: anterior spinal artery

Affected structures:

1. Medial lemniscus --> contralateral loss of discriminative touch, vibration, and conscious proprioception

2. Pyramidal tract --> contralateral hemiparesis

3. Hypoglossal nerve and nucleus --> ipsilateral tongue deviation on protrusion

3

Name the artery, affected structures, and associated deficits for the following syndrome:

Weber's syndrome

Artery: paramedian branches of the PCA

Affected structures:

1. Cerebral peduncle --> contralateral body and facial paralysis (corticospinal and corticobulbar tracts)

2. CN III --> CN III palsy (blown pupil, down-and-out, ptosis)

4

Name the artery, affected structures, and associated deficits for the following syndrome:

Locked-in syndrome

Artery: Basilar a.

Affected structures:

Descending corticobulbar and corticospinal tracts --> total paralysis of limbs and face (except CN III, can still blink)