Cerebrovascular Flashcards
stroke involving perforating branches of ACA causes what
head of caudate / corpus callosum / fornix: abulia, agitation, dysarthria, hemiparesis
stroke involving anterior choroidal artery causes what sx?
contralat hemianopia / hemiparesis
optic tract and posterior limb of internal capsule
lateral aspect of cerebral hemisphere from cortical MCA branches cause what sx?/
face/arm motor/sensory
Aphasia / Gerstmann
Cortical sensory loss/neglect
dominant anterior MCA stroke gives what
Broca’s and hemiparesis
dominant MCA posterior division stroke gives what
hemisensory loss, Wernicke’s aphasia, Gerstmann
borderline MCA/ACA watershed gives what sx
transcortical motor aphasia (repetition intact)
Posterior disconnection syndrome (posterior cc)
left unilateral ideomotor apraxia: can’t produce left hand movement on verbal command OR left constructional apraxia (can’t copy drawing w/ left hand)
anterior disconnection CC syndrome causes what sx
alien hand syndrome (left hand movement dissociated from conscious volition)
What syndrome / vessel?
contralat hemiparesis, ipsilat CN 3 palsy
PcA perforators: Webers midbrain stroke (motor in ears)
What syndrome / vessel? contralat hemiparesis, ipsilat CN 3 palsy AND contralat hemiathetosis/chorea/tremor
Midbrain lesion involving Red nucleus / STN
Benedikt
PCA perforators
ipsilat lower motor neuron VII palsy, contralat hemiparesis
what syndrome /vessel
millard gubler, pontine syndrome from basilar perforators
syndrome / vessels
ipsilat LMN CN VII palsy, contralat hemiparesis AND ipsilat horizontal gaze palsy, and MLF w/ INO
Foville gets the MLF and abducens nerve and facial nerve/nucleus
ipsilat face, contralat body loss of pain/temp
dysarthria
ipsilat ataxia, vertigo, Horners
What syndrome / vessel
PICA Wallenberg syndrome (lateral medullary): not involving motor
Contralat hemiparesis and sensory loss to vibration and proprioception, ipsilat XII tongue palsy
Syndrome /vessel
Dejerine’s from VA and anterior spinal artery perforators (medullary syndrome)
most vulnerable area of spinal cord for infarct
what artery
T4-6
Artery of adamkiewicz at T12-L2
lacunar stroke location with hemiataxia and hemiparesis on same side of body?
basis pontis, corona radiata, thalamocapsular
treatment for pt w/ TIA and afib
coumadin w/ INR goal 2-3
ASA + Plavix for stroke prevention in afib
superior to asa to prevent stroke in afib, but same risk of hemorrhage as coumadin
Dabigatran
reversible direct thrombin inhibitor, no INR monitoring or food interactions for stroke prevention in afib, but still P450 interactions
What is rivaroxaban?
reversible factor Xa inhibitor for stroke prevention in afib
only drug shown to decrease mortality compared to warfarin for stroke prevention in afib, what type of med?
apixaban reversible factor Xa inhibitor
valvular heart dz and stroke prevention when to use antiplatelet vs anticoag 1. rheumatic mitral valve 2. nonrheumatic mv 3. mvp and recurrent stroke 4. prosthetic valves
- coumadin
- antiplatelet
- antiplatelet
- coumadin 2.5-3.5 unless bioprosthetic
management for symptomatic carotid artery disease when
- occluded
- 70-99% stenotic
- 50-69% stenotic
- <49%
- medical
- CAE < 2 wks
- +/- CAE
- medical
asx carotid artery disease tx?
CAE if occlusion >80%
intracranial vs extracranial dissection presentations
intracranial: SAH
extracranial: ischemia
pain and lower>upper cranial neuropathy concerning for what?
carotid dissection
labs to consider for arterial thrombosis
anticardiolipin, anti B2 glycoprotein, lupus anticoagulant factor
labs for venous thrombus
factor V leiden, anti-thrombin III, protein C/S, MTHFR, prothrombin gene mutation
mgmt of stroke and antiphospholipid Ab vs APL syndrome: tx?
antiplatelet if just the antibody
anticoagulation if the syndrome
Classic anticoagulation options and their monitoring (3)
heparin / PTT tx
LMWH factor Xa
Coumadin w/ INR
young female w/ large vessel (aorta, carotid, vertebral, subclavian) narrowing, asymmetric pulses and BP, granulomatous arteritis
Dx and tx
Takayasu’s arteritis
Immunosuppression and vascular reconstruction
older female >50y, mediuma nd large vessel extracranial branches of aortic arch with jaw claudication , wt loss, HA, high ESR
Dx, Tx steps, Pathology?
Giant Cell / Temporal Arteritis
Pathology: intimal thickening, media inflammation, skip lesions (fragmented)
Steroids immediately, and bx large chunk b/c skips
Immunosuppression
Granulomatous inflammation of small arteries and beading of vessels
isolated CNS angiitis / vasculitis
where does the right common carotid arise from?
the brachiocephalic artery
three branches of aorta
- brachiocephalic artery which goes to right common carotid and right subclavian
- left common carotid
- left subclavian
vertebrals arise from what
right and left subclavian
What are the main branches of the ICA?
Ophthalmic (1st) Posterior communicating artery (connects anterior/posterior circ Anterior choroidal ACA/MCA (OPAAM)
What supplies: hypothal, optic tract, anterior/medial thalamus?
posterior communicating
major branch of the ACA that supplies the head of the caudate, anterior limb of IC, anterior putamen?
Causes what sx?
recurrent artery of Huebner (causes contral face/arm wkness)
What separates the A1 and A2 segment of the ACA?
the anterior communicating artery
What are the branches of the vertebral artery?
PICA
Anterior spinal
posterior spinal
vessel involved in lateral medullary syndrome
PICA
Main branches of the basilar artery
perforators (paramedian/circumferential) AICA SCA (Superior cerebellar) Internal auditory (if not AICA branch) PCA
AICA (AI can cause what)
auditory impairment
vessel involved in nystagmus, ipsilat ataxia, contralat loss of p/t, ipsilat Horner’s
Superior cerebellar (involves spinothalamic, sympathetic tract, cerebellum/superior cerebellar peduncle
5 syndromes you can get w/ PCA infarcts
- Alexia w/o Agraphia (occipital/splenium cc)
- Anton (b/l occipital)
- Balint (b/l parieto/occipital)
- Korsakoff (paramedian thalamic branches)
- Prosopagnosia (b/l mesio-temporal/occipital)
4 Thalamic regions / lesions w/ arterial supply and sx
- anterior region causes abulia/apathy: polar or tuberothalamic artery (branch of post comm a): think biPOLAR/Affective d/o
The rest are branches of PCA:
- dorsal: visual field defect: posterior choroidal
- paramedian: altered mental status / amnesia/ vertical gaze palsy: posterior thalamoperforators/paramedian thalamic
- posteriolateral: pure sensory, sensorimotor, or Dejerine Roussy: thalamogeniculate artery
what syndrome, what cause?
contralat hemianesthesia/hemiataxia, dysesthesia, transient hemiparesis, choreoathetosis
Dejerine Roussy from posterolateral thalamic lesion / occlusion of thalamogeniculate artery