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Stroke: Prevention and Treatment


Luis and Inez were playing cards one night when Luis asked Inez a question. She tried to answer but couldn’t speak. Luis knew something was very wrong. Could it be a stroke? Without waiting, he called for emergency help. The ambulance took Inez to the hospital. Emergency doctors said it was a stroke—Luis was right. Because Luis called for help quickly, Inez got the medical care she needed without delay. She started getting well, her speech came back, and once again she’s having long talks with Luis.

Inez was lucky. A stroke could cause anyone lasting physical and mental problems, or even death. Older people are at higher risk. You can take steps to lower your chance of having a stroke. Knowing the symptoms of a stroke and acting quickly could mean the difference between life and disability or death.

Call for help RIGHT AWAY if you see or have any of these symptoms:

  • Sudden numbness or weakness in the face, arm, or leg—especially on one side of the body
  • Sudden confusion or trouble speaking or understanding
  • Sudden problems seeing in one eye or both eyes
  • Sudden dizziness, loss of balance or coordination, or trouble walking
  • Sudden severe headache with no known cause

What Is a Stroke?

A stroke happens when something changes how blood flows through the brain. Blood brings oxygen and nutri­ents to brain cells. If blood can’t flow to a part of the brain, cells that do not receive enough oxygen suffer and eventually die. If brain cells are without oxygen for only a short time, they can sometimes get better. But brain cells that have died can’t be brought back to life. So, someone who has had a stroke may have trouble speaking, thinking, or walking.

There are two major types of strokes. The most common kind (ischemic) is caused by a blood clot or the narrowing of a blood vessel (an artery) leading to the brain. This keeps blood from flowing into other parts of the brain and keeps needed oxygen and nutrients from reaching brain cells. In the second major kind of stroke (hemorrhagic), a broken blood vessel causes bleeding in the brain. This break in the vessel also stops oxygen and nutrients from reaching brain cells.

Never ignore the symptoms of stroke. Call for help if you have any stroke symptoms, even if they don’t last long.

Sometimes the symptoms of a stroke last only a few minutes and then go away. That could be a TIA (transient ischemic attack), also called a mini-stroke. A TIA is a medical emergency. You should get medical help right away. If a TIA is not treated quickly, it could be followed within hours or days by a major disabling stroke.

What Will the Doctor Do?

The doctor will diagnose a stroke based on symptoms, medical history, and medical tests, like a CT scan. A CT scan is a test that lets doctors look closely at pictures of the brain.

All strokes benefit from immediate medical treatment! But, only people with ischemic stroke, the kind caused by a clot, can be helped by a drug called t-PA (tissue-plasminogen activator). This drug breaks up blood clots and can greatly lessen the damage caused by an ischemic stroke. Starting treatment with t-PA within 3 hours after an ischemic stroke is important to recovery. Getting to a hospital right away allows time for a CT scan of the brain. This scan will show whether the clot-busting medicine is the right treatment choice.

What Happens After a Stroke?

A stroke can cause a variety of health problems. Someone who has had a stroke might be paralyzed or have weakness, usually on one side of the body. He or she might have trouble speaking or using words. There could be swallowing or memory problems. Someone who has had a stroke might feel depressed or find it hard to control emotions. There might be pain or numbness.

There are many different ways to help people get better after a stroke. Many treatments start in the hospital and continue at home. Drugs and physical therapy can help improve balance, coordination, and some problems such as trouble speaking and using words. Occupational therapy can make it easier to do things like taking a bath or cooking.

A family doctor will provide follow-up care. Some people make a full recovery soon after a stroke. Others take months or even years. But, sometimes the damage is so serious that therapy cannot really help.

Lower Your Risk of Stroke

Talk to your doctor about what you can do to lower your risk of stroke. Even if you’re in perfect health, follow these suggestions:

  • Control your blood pressure. Have your blood pressure checked often. If it is high, follow your doctor’s advice to lower it. Treating high blood pressure lowers the risk of both stroke and heart disease.
  • Stop smoking. Smoking increases your risk for stroke. It’s never too late to quit.
  • Control your cholesterol. If you have high cholesterol, work with your doctor to lower it. Cholesterol, a type of fat in the blood, can build up on the walls of your arteries. In time, this can block blood flow and lead to a stroke.
  • Control your diabetes. Untreated diabetes can damage blood vessels and also leads to narrowed arteries and stroke. Follow your doctor’s suggestions for keeping diabetes under control.
  • Eat healthy foods. Eat foods that are low in cholesterol and saturated fats. Include a variety of fruits and vegetables every day.
  • Exercise regularly. Try to make physical activity a part of your everyday life. Do things you like; for example, take a brisk walk, ride a bicycle, or go swimming. Talk with your healthcare provider if you haven’t been exercising and you want to start a vigorous program or increase your physical activity.


National Institute on Aging
U. S. Department of Health and Human Services
Public Health Service
National Institutes of Health

This document sourced from the Alzheimer's Disease Education and Referral Center, a service of the National Institute on Aging.



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