Chapter 19 Testing consideration, Patient History, Mechanisms of disease and Physical Examination Flashcards
What is Transient Ischemia (TIA)
Fleeting neurologic dysfunction without lasting effects.
symptoms do not last more than 24 hours.
What is often the source of Transient Ischemia
Heart or carotid artery
What is reversible ischemic neurologic defecit? (RIND)
Brain tissue is damaged but recovers completely
Deficit takes longer than 24 hours to resolve.
Stroke
Produces a permanent neurologic deficit.
Stroke in evolution
Symptoms come and go; considered unstable
Completed stroke
No progression of resolution of the symptoms; considered stable.
Ischemia
Lack of blood due to stenosis or occlusion
Lacunar Infarction
Small loss of brain tissue
Occlusion of a small penetrating artery in the brain.
Hemorrhage
Ruptured aneurysm
Stenosis
abnormal narrowing of a vessel
Fatty Streak
Thin layer of hypoechoic lipid material on the intimal layer
Fibrous plaque
Accumulation of lipids covered by more lipid material, collagen and elastic fiber deposits
Complicated lesion
Fibrous plaque containing fibrous tissue, more collagen, calcium and cellular debris.
Fleeting neurologic symptoms that is known to cause bilateral visual blurring is consistent with
Vertebrobasilar Insufficiency (VBI)
What distinguishes a CVA from a TIA, RIND, and VBI?
A CVA consist of a stroke that has caused permanent damage
Atherosclerosis often forms where?
beneath the intimal lining.
This is a disorder of the metabolism of insulin, and causes chronic complications of the vasculature.
Diabetes Mellitus
This is a disorder consist of excessive lipids in plasma that may lead to the development of atherosclerosis.
Hyperlipidemia
What is known to irritate the endothelial lining of the arteries and cause vasoconstriction?
Tobacco
What are the two most common mechanisms (the process by which something takes place) of cerebrovascular disease?
Ischemia and Hemorrhage
A localized accumulation of lipid containing material, smooth muscle, collagen, fibrin, and platelets is called…
atherosclerosis
Where does atherosclerosis usually occur within the arterial tree?
at bifurcations/branch points
The most frequent source of an embolism is…
The heart
A Hollenhorst plaque is…
a plaque located in the vessel of the retina
The source of the Hollenhorst plaque is the….
ipsalateral ICA
An aggregation of blood trapped in a network of fibrin is…
Thrombosis
If you observe a pulsatile mass in the cervical neck region, it is most likely …
a tortuous carotid vessel
Takayasu’s and Temporal Arteritis cause what to occur to the vessel.
Inflamation
What are all major blood vessels involved in supplying the anterior circulation
- ACA
2.ICA - MCA
What are all major blood vessels involved in supplying the posterior circulation
- PCA
- Va
3.BA
Which vessels cause lateralizing symptoms when obstructed?
anterior cerebrovascular circulation