pontine

Question 1

mid-basilar stroke (lateral and medial pons)

Answer 1

lateral mid pontine syndrome –ipsalateral loss of facial sensation and motors function of the trigeminal nerve, ipsilateral dysmetria.
medial mid-pontine syndrome –ipsilateral dysmetria, contralateral arm and leg weakness, and gaze deviation.

Question 2

top of the basilar artery stroke (midbrain, thalamus, and mesial temporal lobes an occipital lobes).

Answer 2

top of the basilar syndrome –somnolene, pedunclar hallucinations, convergence nystagmus, skew deviation, oscillatory ye movements, colliers sign (retraction and elevation of the eyelids) vertical gaze paralysis.

Question 3

pontine paramedian penetrators (anteromedial pons_

Answer 3

Dorsal-mid-pontine syndrome: ipsilateral nuclear facial palsy, horizontal gaze palsy, and contralateral area nd leg weakness

Question 4

short pontine circumferential arteries (anterolateral pons)

Answer 4

superior medial pontine syndrome –intralateral intranuclear ophthalmoplegia, palatal, facial pharyngeal and or ocular myoclonus, dysmetria, and contralateral arm and leg weakness with ocular bobbing

Question 5

proximal basilar stroke (lower pons)

Answer 5

locked-in syndrome –quadriplegia, horizontal gaze paralysis, bifacial paralysis, tongue and mandibular weakness, awareness is spared.

Question 6

AICA anterior inferior cerebellar artery stroke (ipsilateral labyrinth, lateral pontine tegmentum, and brachium pontis, ICP)

Answer 6

lateral pontine syndrome –ipsalateral dysmetria, hearing loss, horner’s syndrome, choreaform dyskinesia, contralateral thermoanalgesia.