Left Hemispheric Stroke
What is a left hemispheric stroke?
A stroke occurs when blood cannot flow to your brain. The left hemisphere (side) of your brain controls the right side of your body. It also controls your speech and language abilities.
What causes a left hemispheric stroke?
- Ischemic stroke: An artery to your brain gets blocked, usually by a blood clot. The clot stops blood and oxygen from reaching your brain.
- Hemorrhagic stroke: A blood vessel breaks and leaks because a clot gets stuck in it, or the vessel wall is weak. Blood then flows out of the vessel and into brain tissue.
What are the signs and symptoms of a left hemispheric stroke?
- Trouble swallowing, walking, or remembering
- Paralysis on 1 or both sides of your body
- Falling toward your right side
- Lack of awareness of the right side of your body
- Trouble speaking, reading, writing, or understanding language
- Changes in mood or the ability to pay attention or solve problems
What increases my risk for a left hemispheric stroke?
- Age 55 or older
- Male or African-American
- Physical inactivity or obesity
- High cholesterol, high blood pressure, or diabetes
- Chronic inflammatory disease, such as rheumatoid arthritis or lupus
- Family history of stroke, or a low birthweight
- Heart conditions, such as atrial fibrillation, myocardial infarction, or valve disease
- Birth control pills or hormone replacement medicine
- Pregnancy or delivery within the past 6 weeks
How is a left hemispheric stroke diagnosed?
Your healthcare provider will ask about your symptoms and when they started. He will look for signs that show which part of your brain was injured. You may need any of the following:
- A CT or MRI may show where the stroke happened and any damage you have. You may be given contrast liquid to help your skull and brain show up better in the pictures. Tell the healthcare provider if you have ever had an allergic reaction to contrast liquid. Do not enter the MRI room with anything metal. Metal can cause serious injury. Tell the healthcare provider if you have any metal in or on your body.
- An arteriography is used to take x-rays of your arteries to look for blood flow blockage.
- A carotid ultrasound may show narrow or blocked carotid arteries. The carotid arteries are blood vessels in your neck that carry blood to your brain.
How is a left hemispheric stroke treated?
- Medicines may help improve your blood's ability to clot and stop the bleeding. You may instead need medicine to break up blood clots, or to prevent them from forming. The type of medicine you receive depends on what is causing your stroke. You may also need medicine for high blood pressure, high cholesterol, or diabetes.
- Physical and occupational therapy may be needed. A physical therapist teaches you exercises to help improve movement and strength, and to decrease pain. An occupational therapist teaches you skills to help with your daily activities.
- Surgery may be needed to place a tube in your skull. The tube drains extra fluid and checks the pressure in your brain.
How can I decrease my risk for a stroke?
- Manage health conditions. Take your medicine as directed. Check your blood pressure and blood sugar levels as directed. Keep a record and bring it to your follow-up visits.
- Eat a variety of healthy foods. Healthy foods include whole-grain breads, low-fat dairy products, beans, lean meats, and fish. Eat at least 5 servings of fruits and vegetables each day. Choose foods that are low in fat, cholesterol, salt, and sugar. Eat foods that are high in potassium, such as potatoes and bananas.
- Maintain a healthy weight. Ask your healthcare provider how much you should weigh. Ask him to help you create a weight loss plan if you are overweight. Ask about the best exercise plan for you.
- Limit or do not drink alcohol. Limit alcohol to 2 drinks per day if you are a man. Limit alcohol to 1 drink per day if you are a woman. A drink of alcohol is 12 ounces of beer, 5 ounces of wine, or 1½ ounces of liquor.
- Do not smoke cigarettes or use street drugs. Smoking and drugs increase your risk for a stroke. Ask your healthcare provider for information if you need help quitting.
- Get a flu vaccine. To prevent influenza (flu), all adults should get the influenza vaccine. Get the vaccine every year as soon as it becomes available.
How can I tell if someone is having a stroke?
Know the F.A.S.T. test to recognize the signs of a stroke:
- F = Face: Ask the person to smile. Drooping on 1 side of the mouth or face is a sign of a stroke.
- A = Arms: Ask the person to raise both arms. One arm that slowly comes back down or cannot be raised is a sign of a stroke.
- S = Speech: Ask the person to repeat a simple sentence that you say first. Speech that is slurred or sounds strange is a sign of a stroke.
- T = Time: Call 911 if you see any of these signs. This is an emergency.
Call 911 for any of the following:
- You have a seizure.
- You feel lightheaded, short of breath, and have chest pain.
- You cough up blood.
- You have weakness or numbness in your arm, leg, or face.
- You are confused and have problems speaking or understanding speech.
- You have a severe headache, or loss of balance or coordination.
When should I seek immediate care?
- You have double vision or vision loss.
- You are bleeding from your rectum or nose.
- Your arm or leg feels warm, tender, and painful. It may look swollen and red.
When should I contact my healthcare provider?
- Your blood pressure is higher or lower than you were told it should be.
- You have questions or concerns about your condition or care.
Care AgreementYou have the right to help plan your care. Learn about your health condition and how it may be treated. Discuss treatment options with your caregivers to decide what care you want to receive. You always have the right to refuse treatment. The above information is an educational aid only. It is not intended as medical advice for individual conditions or treatments. Talk to your doctor, nurse or pharmacist before following any medical regimen to see if it is safe and effective for you.
© 2014 Truven Health Analytics Inc. Information is for End User's use only and may not be sold, redistributed or otherwise used for commercial purposes. All illustrations and images included in CareNotes® are the copyrighted property of A.D.A.M., Inc. or Truven Health Analytics.
Learn more about Left Hemispheric Stroke
Drugs associated with:
Micromedex® Care Notes:
- Brain Stem Infarction
- Ischemic Stroke
- Ischemic Stroke, Ambulatory Care
- Left Hemispheric Stroke, Ambulatory Care
- Right Hemispheric Stroke
- Right Hemispheric Stroke, Ambulatory Care
- Self Care Measures After A Stroke
- Transient Ischemic Attack
- Transient Ischemic Attack, Ambulatory Care
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