Brain Stroke, Types of, Causes, Pathology, Symptoms, Treatment and Prevention, Animation.

By Brian Lemay 35 comments

A stroke occurs when the blood supply to a
certain part of the brain is reduced or interrupted. Without oxygen and nutrients from the blood,
brain cells cannot function properly and eventually die. There are 2 major types of strokes: ISCHEMIC
stroke caused by a BLOCKED artery, and HEMORRHAGIC stroke caused by a RUPTURED artery. Ischemic stroke happens when a blood clot
OBSTRUCTS an artery. In some patients, the clot forms locally,
inside the blood vessels that supply the brain. This occurs when fatty deposits in an artery,
or cholesterol plaques, rupture and trigger blood clotting. In other cases, a clot may travel to the brain
from elsewhere in the body. Most commonly, this happens in patients with
atrial fibrillation, a heart condition in which the heart does not pump properly, blood
stagnates in its chambers and this facilitates blood clotting. The clots may then pass into the bloodstream,
get stuck in smaller arteries of the brain and block them. Hemorrhagic stroke, on the other hand, occurs
when an artery leaks or ruptures. This can result from high blood pressure,
overuse of blood-thinners/anticoagulant drugs, or abnormal formations of blood vessels such
as aneurysms and AVMs. As a hemorrhage takes place, brain tissues
located BEYOND the site of bleeding are deprived of blood supply. Bleeding also induces contraction of blood
vessels, narrowing them and thus further limiting blood flow. Stroke symptoms may include one or more of
the following: – Paralysis of muscles of the face, arms or
legs: inability to smile, raise an arm, or difficulty walking. – Slurred speech or inability to understand
simple speech. – Sudden and severe headache, vomiting, dizziness
or reduced consciousness. Cerebral stroke is a medical emergency and
requires immediate attention. It is essential to determine if a stroke is
ischemic or hemorrhagic before attempting treatment. This is because certain drugs used for treatment
of ischemic strokes, such as blood thinners, may CRITICALLY aggravate bleeding in hemorrhagic
strokes. – For ischemic strokes, emergency treatment
aims to restore blood flow by removing blood clots. Medication, such as aspirin and tissue plasminogen
activator, TPA, are usually the first options. TPA may be given intravenously, or, in the
case the symptoms have advanced, delivered directly to the brain via a catheter inserted
through an artery at the groin. Blood clots may also be removed mechanically
by a special device delivered through a catheter. – Emergency treatment for hemorrhagic strokes,
on the other hand, aims to stop bleeding, reduce blood pressure, and prevent vasospasm
and seizures. These goals are usually achieved by a variety
of drugs. If the bleeding is significant, surgery may
be required to drain the blood and reduce intracranial pressure. Preventive treatments for strokes include:
– Removal of cholesterol plaques in carotid arteries that supply the brain
– Widening of narrowed carotid arteries with a balloon, and sometimes, a stent. This is usually done with a catheter inserted
at the groin. – Various procedures to prevent rupturing
of brain aneurysms, such as clipping and embolization. – Removal or embolization of vascular malformations
– Bypassing the problematic artery


Sachin Suryawanshi

May 5, 2017, 6:03 pm Reply

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May 5, 2017, 6:31 pm Reply

Fantastic video! Keep it up!

Maureen Bartley

May 5, 2017, 6:43 pm Reply

Very good thank you. Nice to level to recommend to patients and families.

Adel Alamri

May 5, 2017, 8:44 pm Reply

you are amazing guys…keep up the good work

Santh Prakash

May 5, 2017, 2:26 am Reply

cns drugs….

abdurrhman Elgohary

May 5, 2017, 2:18 am Reply

you are awosome

Alila Medical Media

May 5, 2017, 10:03 pm Reply

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Nov 11, 2017, 7:39 am Reply

Can you guys make a video about cancer and end of life?

Navneet Kaur

Jan 1, 2018, 5:29 am Reply

Basic neuro anatomy

Azra Perveen

Jan 1, 2018, 9:32 pm Reply

Hi, my mum had massive stroke six months before she is pralized right side swallowing problem i want to know is she will b ok


Feb 2, 2018, 7:25 am Reply

Thank you stroke made easy for me to understand

Elizabeth Parsons

May 5, 2018, 3:33 am Reply

Thank you; excellent presenntation..

Tatjana Dimitrijevic

May 5, 2018, 7:25 pm Reply

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Alila Medical Media

May 5, 2018, 3:02 am Reply

If this video is helpful to you, please consider supporting our next projects. As a token of our appreciation, we also offer early video access and free image downloads in return, please check us out here:

Emad Hana

Jun 6, 2018, 3:36 pm Reply

dopaminergic pathways in the brain for Parkinson's disease, schizophrenia, reward pathway in the nucleus accumbens and inhibition of the release of prolactin.

Sha Medi Corner

Jun 6, 2018, 1:45 am Reply

More videos on basic neurology

Saurav Misra

Jul 7, 2018, 11:20 am Reply

I had an severe ischemic stroke 3.5 yrs back resulting in left sided hemiparesis. Want to know wheather stent implanting now can help me in recover fast?

Aijaz Ahmed

Jul 7, 2018, 10:59 am Reply

if the blockage is chronic..can that be opened up with medicine like anti-platelets?

Kamil Karnale

Jul 7, 2018, 9:25 am Reply

Excellent presentation!!!

Saurav Misra

Aug 8, 2018, 7:08 am Reply

Can intracerebral stenting be helpfull to recover fast from paralysis caused by ischemic stroke around 3.5 yrs back?

Ranjeet Singh

Sep 9, 2018, 7:48 pm Reply

thanks for this information. looking forward for details on Arrhythmia , types and what are the drugs used and hoe they woks.


Oct 10, 2018, 2:45 pm Reply


Ratnadeep Gaikwad

Oct 10, 2018, 11:09 am Reply

Good information

Hawa Hussein

Oct 10, 2018, 1:35 pm Reply

Than you

o o

Oct 10, 2018, 8:08 am Reply

you are the best , big thanks ?.

Vijay krish

Nov 11, 2018, 4:16 pm Reply

Thank you

Mizanur Rahman

Dec 12, 2018, 2:29 pm Reply

Thank you

Aswathy P

Feb 2, 2019, 2:27 am Reply


Aswathy P

Feb 2, 2019, 2:28 am Reply


Vivek Gupta

Mar 3, 2019, 11:32 pm Reply

Thanks but tell me doctor name for remove blood clot in strock condition

Vivek Gupta

Mar 3, 2019, 11:32 pm Reply

In india

hongchuan wang

Jun 6, 2019, 9:41 am Reply

Why am I watching this at 4am

Bandido Diesel

Aug 8, 2019, 4:29 pm Reply

Is there such a thing "Progressive Stroke" I walked into the emergency room and told doctors… I am having a stroke ! They did a few test asked me a few questions , said your not. After five days in the hospital every day I lost 20% movement until I lost all movement right arm and leg face dropped etc. they said it was a progressive stroke… ??

Tiago Tomaz

Oct 10, 2019, 4:33 pm Reply

Magnesium chloride cleans blood vessels and therefore prevents and avoids stroke. Because it removes the fats from the blood vessels and impurities inside them that clog them up. It improves the varicose veins as well or makes them disappear, and lowers the pressure of those who have high blood pressure, making it lower and normalize and never getting high again. But it has to take for a while and then stop. It cannot take forever, because otherwise it may give some problem. Hope it helps everyone and hugs!

ramnath tandel

Nov 11, 2019, 2:24 pm Reply

Can please tell me about CVst case…

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