Neurology Flashcards
Ischemic strokes < ____ hours old are usually not visible on CT
6
Riluzole
treatment modestly increases survival in ALS by decreasing presynaptic glutamate release
Facial nerve palsy is seen as a complication in what diseases?
AIDS, Lyme, Sarcoid, Tumors, Diabetes
Single greatest risk factor for stroke?
HTN
Nerve root: achilles?
S1
Nerve root: patella
L3,4
Nerve root: biceps
C5
Nerve root: triceps
C7
Name artery: contralateral paresis, sensory loss in leg, cognitive and personality change
ACA
Name artery: homonymous hemianopia, vertigo
PCA
Name artery: pure motor, pure sensory, ataxic hemiparesis, dysarthria
Lacunar
contralateral paresis, sensory loss in face and arm, gaze to side of lesion, neglect if non-dom hemisphere, aphasia if dom hemisphere
MCA
Target INR when someone has a prosthetic valve?
2.5-3.5
Etiologies of SAH?
ruptured berry aneurysm (saccular aneurysm), AVM, trauma to circle of willis
Rapid onset of “worst HA of my life” with photophobia and neck stiffness?
SAH
If CT is negative and you have suspicion of SAH what should you do?
LP (RBCs, xanthochromia)
Once SAH has been confirmed, next test?
Four vessel angiography
Conditions associated with berry aneurysm that make SAH more likely diagnosis?
Marfan, aortic coarc, ADPKD, ehlers danlos, sickle-cell anemia, smoking, atherosclerosis, htn
Treatment for SAH?
- -neurosurg for definitive
- prevent rebleed (BP <150)
- revent vasospasm/ischemic stroke (CCBs- nimodipine)
- decrease ICP
- treat hydrocephalus with lumbar drain, serial LPs, ventriculoperitoneal shunt
Major cause of delayed morbidity/mortality in SAH?
vasospasm- ischemic stroke
Early and late signs and symptoms of intracerebral hemorrhage are?
early: focal motor, sensory deficits that worsen as hematoma expands
late: increased ICP (vomit, HA, brady, reduced altertness)
Suspect herniation if patient develops _____
Cushing’s triad: hypertension, brady, irregular respiration)
common etiology for septic thrombosis of cavernous sinus?
central face skin infection, orbit infection, sinus infection.
blown pupil suggests impending ____
ipsilateral brainstem compression
Rupture of bridging veins
subdural
more common hematoma in elderly and alcoholics
subdural