cerebrovascular accidents Flashcards
cerebrovascular accident
includes all disorders in which an area of the
brain is temporarily or permanently affected by ischemia or
bleeding and one or more of the cerebral blood vessels are
involved in the pathological process.
death of tissue
infarction:
hemorrhage
severe bleeding
ischemia
restriction of blood supply to tissues, that can cause shortage of oxygen supply
aneurysm
when part of artery wall widen abnormally or balloon out
formation of blood clot inside blood vessels
Thrombosis
Emboli
something that lodge into blood vessel and block it
Clinical classification of CVA
A] Asymptomatic
B] CVA with focal brain dysfunction
1- Transient Ischemic Attack
2- Stroke a- Ischemic
b- Hemorrhagic
C] Vascular dementia
D Hypertensive encephalopathy
asymptomatic cerebrovascular event
a stroke that doesn’t have any outward symptoms associated with stroke and the patient is unaware that they have suffered a stroke
transient ischemic attack [mini stroke]
-episodes of temporary and focal dysfunction of vascular origin
-they have no persistent neurological deficits
-lasting 2 to 15 min
-its recurrent indicate thrombotic disease
stroke
rapid developed clinical sign of focal or global disturbance of cerebral dysfunction
–lasting more than 24hrs
–no other cause rather than vascular origin
–can lead to death
Focal neurological ocular symptoms
Motor symptoms
Sensory symptoms
Vestibular symptoms
Visual symptoms
Speech and language disorders
Behavioral/cognitive symptoms
non focal ocular symptoms
feeling faint, lightheaded
bilateral visual impairments
urine or stool incontinence
confusion
vascular dementia
it can be defined as a complex disease that develops as a result of ischemic or hemorrhagic stroke or ischemic-hypoxic brain lesions, characterized by severe cognitive involvement that can
disrupt activities of daily living
hypertensive encephalopathy
It often occurs in patients with chronic hypertension
whose blood pressure is not well controlled.
-Headache
-unconsciousness
-epileptic seizures and
sometimes transient neurological problems can be
seen as result in rapid increase in blood pressure