Stroke Flashcards
- intracerebral hemorrhage
: rapidly developing clinical signs of neurological dysfunction
attributable to a focal collection of blood within the brain parenchyma or ventricular
system that is not caused by trauma.
subarachnoid hemorrhage
is rapidly developing signs of neurological dysfunction
and/or headache because of bleeding into the subarachnoid space, which is not caused
by trauma.
subarachnods stroke causes
Aneurysms
Trauma
Drugs (cocaine is most common)
Intracerebral hemorrhage causes
Small artery disease/Hypertension Anticoagulants Trauma Bleeding disorders o Ex: leukemia, things that affect clotting factors Tumors Aneurysms/AVMs
whats more lethal
hemorrhages acutely–>can expand
Hemorrhagic stroke is preventable
Prevent inappropriate anticoagulation
Control BP and smoking
Prevent head injuries and illicit drug use
best way to treat hem stroke
Risk factor control and preventing an stroke is still the best
treatment we have
Ischemic: Tissue plasminogen activator
Approved
in ischemic stroke < 3 hours from onset
beneft tpa
e: 13% absolute benefit to normal or near normal state,
doubles odds of good outcome despite risk of hemorrhage
wndow mechancal devces
8 hours
Possible targets of neuroprotecton
Prevention of early ischemic injury with the excitotoxicity
Prevention of reperfusion injury
Prevention apoptosis and promotion of repair, regeneration
Cerebellar hemorrhage
Rapid deterioration possible b/c of
compression of brainstem
Anticoagulant-related ICH
Often in multiple areas -More serious than typical hemorrhage -Tend to progress more than patients not on anticoags
Amyloid angiopathy
Hemorrhages b/c of fragility of
vessels
o Can also impeded blood flow
o Related to age
Penumbra area may remain viable for several hours
due to the collateral arteries that supply the
penumbral zone
diffusion/perfusion mismatch