this is the power point about the stroke and the definition,the different types of stroke and the ways of treatment of stroke because stroke is one of the most important and mainly reasons of deaths nowadays.

1. stroke
The researcher : Mehrasa Nikandish
Semester : 2019 -2020
Subject : Human Physiology
University of Georgia (Tbilisi)

2. Overview
What is stroke ( introduction )
Symptoms
Causes
Types of stroke
What is *FAST*

3. introduction
What is stroke ?
A stroke is a “brain attack”. It can happen
to anyone at any time. It occurs when
blood flow to an area of brain is cut off.
When this happens, brain cells are
deprived of oxygen and begin to die.
When brain cells die during a stroke,
abilities controlled by that area of the
brain such as memory and muscle
control are lost.
Symptoms
Trouble with speaking and
understanding
Paralysis or numbness of the
face, arm or leg
Trouble with seeing in one or
both eyes
Headache
Trouble with walking

4. Causes
A stroke may be caused by a
blocked artery (ischemic stroke) or
the leaking or bursting of a blood
vessel (hemorrhagic stroke).
Some people may experience only a
temporary disruption of blood flow
to the brain (transient ischemic
attack, or TIA) that doesn't cause
permanent damage.

5. Types of stroke
Ischemic stroke:
About 80 percent of strokes are ischemic
strokes. Ischemic strokes occur when the
arteries to your brain become narrowed or
blocked, causing severely reduced blood flow
(ischemia). The most common ischemic strokes
include:
1. Thrombotic stroke: A thrombotic stroke
occurs when a blood clot (thrombus) forms in
one of the arteries that supply blood to your
brain. A clot may be caused by fatty deposits
(plaque) that build up in arteries and cause
reduced blood flow (atherosclerosis) or other
artery conditions.

6. 2. Embolic stroke :
An embolic stroke occurs when a blood clot or other debris
forms away from your brain — commonly in your heart — and
is swept through your bloodstream to lodge in narrower brain
arteries. This type of blood clot is called an embolus.

7. Types of stroke
Hemorrhagic stroke:
Hemorrhagic stroke occurs when a blood
vessel in your brain leaks or ruptures. Brain
hemorrhages can result from many
conditions that affect your blood vessels.
These include:
Uncontrolled high blood pressure
(hypertension)
Overtreatment with anticoagulants (blood
thinners)
Weak spots in your blood vessel walls
(aneurysms)
Types of hemorrhagic stroke include:

8. 1. Intracerebral hemorrhage:
In an intracerebral hemorrhage, a blood vessel in the
brain bursts and spills into the surrounding brain
tissue, damaging brain cells. Brain cells beyond the
leak are deprived of blood and are also damaged.
High blood pressure, trauma, vascular malformations,
use of blood-thinning medications and other
conditions may cause an intracerebral hemorrhage.
2. Subarachnoid hemorrhage :
In a subarachnoid hemorrhage, an artery on or near
the surface of your brain bursts and spills into the
space between the surface of your brain and your
skull. This bleeding is often signaled by a sudden,
severe headache.

9. •Transient ischemic attack (TIA)
A transient ischemic attack (TIA) —
sometimes known as a mini stroke — is a
temporary period of symptoms similar to
those you'd have in a stroke. A temporary
decrease in blood supply to part of your
brain causes TIAs, which may last as little as
five minutes.
Like an ischemic stroke, a TIA occurs when a
clot or debris blocks blood flow to part of
your nervous system — but there is no
permanent tissue damage and no lasting
symptoms.

10. What is *FAST*
F: Face drooping. If one side of the face
droops, it’s a sign of a possible stroke.
A: Arm weakness. If the person cannot
hold both arms out, it’s another
possible stroke sign
S: Speech difficulty. Slurring words
and poor understanding of simple
sentences is another possible stroke
sign.
T: Time to call 9-1-1 If any of the FAS
signs are positive, it’s Time to call 9-1-1
immediately

11. Thanks for your attention
References :
https://www.medicinenet.com/stroke_pictures_slid
eshow/article.htm
https://www.mayoclinic.org/diseases-
conditions/stroke/symptoms-causes/syc-20350113
https://pennstatehealthnews.org/2017/05/the-
medical-minute-be-fast-to-recognize-stroke-
signs/
Principles of Human Physiology ( CINDY L.
Stanfield )
https://www.cdc.gov/stroke/index.htm