cerebral pathology Flashcards
commonest site for stroke
MCA
contralateral leg paresis, sensory loss, cognitive deficits (e.g. apathy, confusion, and
poor judgment)
ACA
contralateral weakness and sensory loss of face and arm
• cortical sensory loss
aphasia
dominant hemisphere (usually left) MCA
contralateral weakness and sensory loss of face and arm
• cortical sensory loss
neglect
non-dominant hemisphere MCA
eye deviation towards the side of lesion and away from weak side
MCA
contralateral hemianopia or quadrantanopia
• midbrain findings: CN III and IV palsy/pupillary changes, hemiparesis
• thalamic findings: sensory loss, amnesia, decreased level of consciousness
PCA
cortical blindness or face blindness
bilateral PCA
impaired Extra-ocular movements, vertical nystagmus, reactive miosis,
hemi- or quadriplegia, dysarthria, locked-in syndrome, coma
proximal basilar artery
somnolence, memory and
behavior abnormalities, oculomotor deficit
distal basilar artery - ie top of the basilar syndrome also known as rostral brainstem infarction
ipsilateral ataxia, ipsilateral Horner’s, ipsilateral facial sensory loss, contralateral limb impairment of pain and temperature sensation, nystagmus, vertigo, nausea/vomiting, dysphagia, dysarthria, hiccups
posterior inferior cerebral artery - also known as lateral medullary or wallenbergs syndrome
contralateral hemiparesis facial sparing
contralateral impaired proprioception and vibration sensation,
ipsilateral tongue weakness
medial medullary infarct due to anterior spinal artery or cord artery infarct)
which part of brain affected in locked-in syndrome
pons
which part of brain affected in weber’s syndrome:
ipsilateral oculomotor cranial nerve palsy and contralateral hemiparesis or hemiplegia
midbrain - PCA occlusion
which part of brain affected when there is:
hoarseness, dysphagia, reduced gag reflex
medulla - wallenberg’s syndrome/lateral medullary syndrome
which part of brain affected with pure sensory or motor loss
internal capsule