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DIT more brain

circle of willis, brainstem occlusion, cortex and spinal cord

QuestionAnswer
aneurysm causes the eye to look down and out posterior communicating arter
aneurysm may cause bilateral loss of lateral visual fields anterior communicating artery
broca's or wernicke's aphasia middle cerebral artery
unilateral lower extremity sensory and/or motor loss anterior cerebral artery
unilateral facial arm sensory and/or motor loss middle cerebral artery
what is the hallmark sign of a general brainstem lesion? alternating sydromes: with long tract symptoms on one side (hemiparalysis) and cranial n symptoms on the other
What causes Weber's syndrome midbrain infarction resulting from occlusion of the paramedian branches of the posterior cerebral artery
C/L hemiparesis (cerebral peduncle lesion) and CN III palsy (ptosis, dilation, down and out) weber syndrome
what causes medial medullary syndrome? occlusion of a paramedian branch of ANTERIOR SPINAL ARTERY causing unilateral infarct of medial portion of rostral medulla
C?L spastic hemiparesis, C/L tactile and kinesthetic defects, tongue deviates toward side of lesion, preserved pain and temperature medial medullary syndrome
pyramid/corticospinal tract damage, medial lemniscus damage, hypoglossal nucleus/nerve damage medial medullary syndrome
tactile + motor + tongue deviation medial medullary syndrome
wallenberg's syndrome lateral medullary syndrome
lateral medullary syndrome occlusion of PICA causing unilateral infarct of lateral rostral medulla
l/o pain and temp over C/L body adnd I/L face. hoarseness, difficulty swallowing, l/o gag. I/L horners. Vertigo, nystagmus, N/V. ipsilateral cerebellar deficits lateral medullary syndrome
spinothalamic tract, trigeminothalamic tract, nucleus ambiguus(IX, X), descending symp, vestibular nuclei, and inf cerebellar peduncle damage. lateral medullary syndrome
medial inferior pontine syndrome occlusion of a paramedian branch of BASILAR artery
C/L spastic hemiparesis, l/o touch, vibration,kinesthetics. paralysis of gaze to side of lesion. I/L paralysis of lat rectus m. NL P&T medial inferior pontine syndrome
corticospinal tract, medial lemniscus, pontine gaze center (PPRF/abducens nuc) medial inferior pontine syndrome
lateral inferior pontine syndrome AICA occlusion
I/L facial n paralysis, l/o taste on ant tongue, deafness and tinnitus, nystagmus, vertigo, N/V, limb and gait ataxia, l/o P&T from face, C/L body l/o P&T. I/L horners lateral inferior pontine syndrome
Lateral superior pontine synddrome occlusion of AICA in superior/rostral pons
originates from the germinal matrix intraventricular hemorrhage of the newborn
CSF pressure elevated in a young obese female with HA and papilledema. may cause vision losss psuedotumor cerebri
touch, vibration, and pressure sensation dorsal columns
voluntary motor command from motor cortex to body lateral corticospinal
voluntary motor command from motor cortex to head/neck corticobulbar
alternate routes for the mediation of voluntary mvmt reticular and rubrospinal
pain and temperature sensation spinothalamic
important for postural adjustments and head movements vestibulospinal
proprioceptive info for the cerebellum D/V spinocerebellar tract
hereditary ataxias freidrichs, vit E def, ataxia=telangiectasia, metachromatic leukodystrophy, wilsons
Brown-sequard hemisection of the spinal cord
UMN, LMN, pain temp, sensation brown-sequard
what is the most common site of a berry aneurysm anterior communicating artery bifurcation
a/w berry aneurysm ADPKD, Marfans, ehler-danlos
where do dorsal columns decussate medulla (after nuclei)
wehre does LCST decussate caudal medulla (pyramids)
where does STT decussate anterior white commisure
Classic presentation of syringomyelia bilateral l/o P&T in a shawl-like distribution
a/w syringomyelia arnold-chiari II
cardial features of Parkinson's (TRAP)tremor, rigidity, akinesia, postural instability
UMN signs hypertonia/reflex, babinski, spasticity, weakness
LMN signs hypotonia/reflex, weakness, atrophy, fasiculations
Where do you see atrophy in a 40yo with early dementia and uncontrollable movements of upper extremities basal ganglia/ caudate nucleus
involuntary flailing of one arm. hemiballismus = C?L subthalamic nucleus lesion
MPTP exposure deplets what NT Dopamine
Cannot abduct L eye on lateral gaze w/ nL convergence. difficulty smiling pontine lesion
locked -in syndrome basilar a lesion
where do you perform a lumbar puncture L3-L5
where is CSF subarachnoid space
MVA. feels fine but then loses consciousness. intracranial hemorrahge that does not cross sutre lines. temporal bone, MMA, epidural
marfans and HTN. severe HA. CSF reveals numerous red blood cells rupture of berry aneurysm = subarachnoid hemorrhage
85 w/ alzheimers falls and 3 days later has HA and vomiting. subdural hemorrahge, bridgin vv.
hyperparathyroidism thyroidectomy
metastatic disease to brain Lungs, Bone, Skin, Kidney, GI
lysosomal storage disease Gaucher's
myocarditis Coxsackie, Echo
Created by: kayjames