lateral and medial medullary syndromes

Question 1

lateral medullary syndrome

Answer 1

PICA stroke

affects:
Sympathetics - horners syndrome on ipsilateral side

Spinocerebellar tract- cerebellar signs incl. ataxia

spinothalamic tract -loss of pain and temp on CONTRALATERAL side of body

sensory nucleus of CN5 -altered sensation (pain and temp loss) in face on ipsilateral side

Question 2

medial medullary syndrome

Answer 2

anteiror spinal artery stroke

affects:
medullary pyramid -hemiparesis (weakness)/hemiplegia (paralysis) of whole CONTRALATERAL side

dorsal medical lemiscal pathway- loss of discriminative touch, conscious proprioception, 2 point discrimination, vibration on CONTRALATERAL side

hypoglossal nerve- deviation of tongue towards affected side (due to ipsilateral muscle weakness)

Question 3

PCA stroke

Answer 3

affects:

visual cortex- homonymous hemianopia on contralateral side

Question 4

ICA stroke

Answer 4

the head, upper limb and lower limb will all be screwedon the other side

Question 5

MCA

Answer 5

contralateral weakness and loss of sensation in upper limbs and head

and aphasia