Stroke Flashcards
1
Q
Location of hypertensive hemmorhage
A
Basal ganglia - particularly the putamen/external capsule (60-65%)
Thalamic hemorrhage (15-25%)
pontine hemorrhage (10%)
Cerebellar hemorrhage
RARELY can get Lobar ( as per AMIRSYS ER book)
2
Q
Types of ischemic stroke
A
large-artery atherosclerosis
cardioembolic
lacunes
3
Q
Risk of cardioembolism High risk
A
Mechanical valve mitral stenosis with fib atrial fibrillation left atrial/atrial appendage thrombus Sick sinus syndrome recent MI (
4
Q
What is hemodynamicall significant narrowing of extra or proximal intracranial vessels?
A
50-70% or vessel lumen reduced to less than 1.5mm
5
Q
Where do watershed infarcts occur?
A
MCA/PCA - posterior parietal region
ACA/MCA - frontal lobes and basal ganglia
6
Q
Areas affected by hypoxic ischemic injury
A
Hippocampus (Ammon's horn) Globus Pallidus Amygdala (anaterior choroidal -posterior watershed) Cerebellum Occipital lobes
7
Q
Definition of lacune
A
Infarct less than 15mm
8
Q
Location of lacunar infarcts
A
Basal ganglia
Internal capsule
Pons
Corona radiata
