Brain Health

Stroke: What You Need to Know

A stroke could cause anyone lasting physical and mental problems, or even death, and 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. Here, from the experts at the National Institute of Aging, is information that could save someone’s life – or your own:

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.

Stroke Is an Emergency. Call 911 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

Never ignore the symptoms of stroke. Call 911 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?