cerebrovascular accidents Flashcards

1
Q

cerebrovascular accident

A

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.

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2
Q

death of tissue

A

infarction:

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3
Q

hemorrhage

A

severe bleeding

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4
Q

ischemia

A

restriction of blood supply to tissues, that can cause shortage of oxygen supply

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5
Q

aneurysm

A

when part of artery wall widen abnormally or balloon out

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6
Q

formation of blood clot inside blood vessels

A

Thrombosis

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7
Q

Emboli

A

something that lodge into blood vessel and block it

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8
Q

Clinical classification of CVA

A

A] Asymptomatic
B] CVA with focal brain dysfunction
1- Transient Ischemic Attack
2- Stroke a- Ischemic
b- Hemorrhagic
C] Vascular dementia
D Hypertensive encephalopathy

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9
Q

asymptomatic cerebrovascular event

A

a stroke that doesn’t have any outward symptoms associated with stroke and the patient is unaware that they have suffered a stroke

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10
Q

transient ischemic attack [mini stroke]

A

-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

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11
Q

stroke

A

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

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12
Q

Focal neurological ocular symptoms

A

Motor symptoms
Sensory symptoms
Vestibular symptoms
Visual symptoms
Speech and language disorders
Behavioral/cognitive symptoms

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13
Q

non focal ocular symptoms

A

feeling faint, lightheaded
bilateral visual impairments
urine or stool incontinence
confusion

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14
Q

vascular dementia

A

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

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15
Q

hypertensive encephalopathy

A

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

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16
Q

Epidemiology:

A

the branch of medicine which deals with the incidence,
distribution, and possible control of diseases and other factors relating to health.

17
Q

classification of stroke

A

Hemorrhagic
Ischemic 80%

18
Q

classifications of ischemic strokes

A

Large artery atherosclerosis 50%
Cardio embolism 20%
Lacunar stroke 20%
Of other determined etiolog 5%
Of non determined etiology 5%

19
Q

Hemorrhagic stroke

A

intracranial bleeding occurs when blood vessel within the skull rupture or leaks

20
Q

hemorrhagic stroke is examined into

A

Intracerebral -[bleeding within brain tissue] 10-20%
-has worth prognosis with 30days reported deaths
Subarachnoid

21
Q

causes of intracerebral hemorrhagic stroke

A

hypertension
blood thinners
arteriovenous malformation
head trauma
bleeding disorders
trumors

22
Q

Subarachnoid hemorrhagic stroke

A

caused by aneurysm
85%
subarachnoid area is filled with pressurized blood due to rupture

23
Q

Symptoms of SAH

A

sudden onset of severe headache
nausea or vomiting
neck stiffness
sensitive to light
blurred vision
seizure

24
Q

act FAST for stroke

A

Face
Arm
Speech
Time

25
Q

right hemiplegia/left hemisphere

A

a) Visiomotor perception and memory are intact
b) Global aphasia
c) Agraphia, alexia
d) Difficulty in right-left discrimination
e) Dyslexia
f) Difficulty in understanding
the speech
g) Emotional lability, anxiety
h) Loss of calculation ability

26
Q

left hemiplegia/right hemisphere

A

a) Visiomotor perceptual disorder (Perception of the environment, perception of spatial positions of objects)
b) Location, time, person disorientation
c) Left neglect
d) Copying, geometric shape detection, problem in separating
objects from the background,
e) Impairment in the perception of depth and vertical position
f) Loss of foresight and decision making
g) Learning difficulties, concentration difficulties

27
Q

sign and symptoms of brainstem stroke

A

 Difficulty in speaking
 Difficulty in breathing
 Problems with chewing and swallowing
 There is partial or complete loss of hearing
 Patient experiences blurry vision
 There is weakness of the limbs
 Patient experiences loss of sensation or numbness
 Paralysis

28
Q

sign and symptoms of brainstem stroke

A

 Difficulty in speaking
 Difficulty in breathing
 Problems with chewing and swallowing
 There is partial or complete loss of hearing
 Patient experiences blurry vision
 There is weakness of the limbs
 Patient experiences loss of sensation or numbness
 Paralysis

29
Q

blood supply of the brain

A
  1. Anterior Circulation
    1.1 Internal Carotid Artery
    1.1.a Anterior Cerebral Artery
    1.1.b Medial Cerebral Artery
    1.2 External Carotid Artery
  2. Posterior Circulation
    2.1 Vertebral Artery
    2.2 Basilar Artery
    2.3 Posterior Cerebral Artery
30
Q

neurological recovery

A

Cellular and molecular processes for regeneration and reorganization begin immediately after the stroke, just around the lesion region and partially in distant areas

31
Q

Underlying factors in spontaneous neurological recovery

A

Elimination of harmful material
Neuroplasticity

32
Q

neuroplasticity

A

Brain ability to recognize itself by forming new neural connections throughout life
It follows use it or lose it principle

33
Q

Main mechanisms of neuroplasticity

A

*Collateral sprouting
*Unmasking
*Assumption of function by undamaged redundant neural pathways

34
Q

stages to follow in neuroplasticity patients treatments

A

1] Acute care
2] Evaluation of stroke patients in terms of rehabilitation
3] Physiotherapy and rehabilitation
4] Traditional therapy
5] Neurophysiological approaches
6] Assistive modalities in stroke rehabilitation
*electromyographic biofeedback
*cryotherapy
*functional electrical stimulation
7] Walking aids
*canes
*crutches
*walkers