West Nile Virus Infection

WHAT YOU SHOULD KNOW:

• West Nile virus infection is a disease that is carried by mosquitoes and is caused by the West Nile virus (WNV). This virus (germ) mainly affects birds, but can also infect people. People usually get the virus when they are bitten by an infected mosquito. A person with WNV infection may pass it to another person through blood transfusions or organ transplants. An infected mother may pass the virus to her unborn child or to her nursing baby through breast feeding.
  
  
• Most people who get a WNV infection do not have any signs or symptoms. People who develop West Nile fever may have mild symptoms and may feel like they have the flu. A fever with signs or symptoms of brain, spinal cord, or nerve problems is seen with a severe WNV infection. These problems may include acting or talking differently than normal, trouble thinking clearly, seizures (convulsions), or severe weakness. A WNV infection may be diagnosed by a lumbar puncture, blood tests, and other imaging tests. Treatment includes treating the signs and symptoms of this disease, as well as its complications. WNV infection may be prevented by controlling human and mosquito contact. With treatment, such as medicines, you may have a greater chance of having a full recovery.

CARE AGREEMENT:

You have the right to help plan your care. To help with this plan, you must learn about your health condition and how it may be treated. You can then discuss treatment options with your caregivers. Work with them to decide what care may be used to treat you. You always have the right to refuse treatment.

RISKS:

You may become very sick from a WNV infection. Your brain and spinal cord may be affected. If left untreated, you may have problems with hearing, seeing, talking, or learning. WNV infection may even cause seizures (convulsions), paralysis (unable to move), or death. Having treatment as early as possible may decrease these risks. The risks of serious problems may also be less if you follow your caregiver's advice. Talk to your caregiver if you are worried or have questions about your disease, medicine, or care.

WHILE YOU ARE HERE:

Informed consent: You have the right to understand your health condition in words that you know. You should be told what tests, treatments, or procedures may be done to treat your condition. Your doctor should also tell you about the risks and benefits of each treatment. You may be asked to sign a consent form that gives caregivers permission to do certain tests, treatments, or procedures. If you are unable to give your consent, someone who has permission can sign this form for you. A consent form is a legal piece of paper that tells exactly what will be done to you. Before giving your consent, make sure all your questions have been answered so that you understand what may happen.

IV: An IV is a tube placed in your vein for giving medicine or liquids. This tube is capped or connected to tubing and liquid.

Medicines: Your caregiver may give you the following kinds of medicines:

• Antibiotics: Antibiotics may be given to help treat or prevent an infection caused by germs called bacteria.
  
  
• Anticonvulsant medicine: Anticonvulsants are given to control seizures.
  
  
• Antiviral medicine: Antiviral medicine may be given to fight an infection caused by a germ called a virus.
  
  
• Fever medicine: This type of medicine is given to help lower your body temperature. Common medicines used to lower temperature include acetaminophen and ibuprofen. Lowering your body temperature may help you feel better.
  
  
• Pain medicine: Caregivers may give you medicine to take away or decrease your pain. Medicine may be given regularly, or may only be given if you ask caregivers for it. Tell caregivers if your pain does not decrease enough for you to feel better. Do not wait to ask for your pain medicine until the pain is very bad. The medicine may not work as well at controlling your pain if you wait too long to take it. Ask your caregiver for help getting out of bed if you feel tired or dizzy.

Neurologic signs: Neurologic signs are also called neuro signs, neuro checks, or neuro status. Caregivers check your eyes, your memory, and how easily you wake up. Your hand grasp and balance may also be tested. This helps tell caregivers how your brain is working after an injury or illness. You may need to have your neuro signs checked often. Your caregiver may even have to wake you up to check your neuro signs.

Respiratory support:

• Oxygen: You may need extra oxygen to help you breathe easier. It may be given through a plastic mask over your mouth and nose. It may be given through a nasal cannula, or prongs, instead of a mask. A nasal cannula is a pair of short, thin tubes that rest just inside your nose. Tell your caregiver if your nose gets dry or if the mask or prongs bother you. Ask your caregiver before taking off your oxygen. Never smoke or let anyone else smoke in the same room while your oxygen is on. Doing so may cause a fire.
  
  
• Ventilator: A ventilator is a special machine that can breathe for you if you cannot breathe well on your own. You may have an endotracheal tube (ET tube) in your mouth or nose. A tube called a trach may go into an incision (cut) in the front of your neck. The ET tube or trach is hooked to the ventilator. The ventilator can also give oxygen to you.

Tests: If you have symptoms of swelling of the brain or its coverings, your caregiver may do some tests. It is important to know what is causing your symptoms. This will help your caregiver decide what treatment is best for you. Tests may also be done to see how your body is handling your disease.

• Blood tests: You may need blood taken for tests. The blood can be taken from a blood vessel in your hand, arm, or the bend in your elbow. It is tested to see how your body is doing. It can give your caregivers more information about your health condition. You may need to have blood drawn more than once.
  
  
• CT scan:
  
  
  • This is also called a CAT scan. A special x-ray machine uses a computer to take pictures of your brain. It may be used to look at bones, muscles, brain tissue, and blood vessels.
    
    
  • You may be given dye before the pictures are taken. The dye is usually given in your IV. The dye may help your caregiver see the pictures better. People who are allergic to iodine or shellfish (lobster, crab, or shrimp) may be allergic to some dyes. Tell the caregiver if you are allergic to shellfish, or have other allergies or medical conditions.
  
  
• EEG: This test is also called an electroencephalogram. Many small pads or metal discs are put on your head. Each has a wire that is hooked to a machine. This machine prints a paper tracing of brain wave activity from different parts of your brain. Caregivers look at the tracing to see how your brain is working.
  
  
• Lumbar puncture: This procedure may also be called a spinal tap. During a lumbar puncture, you will need to lie very still. Caregivers may give you medicine to make you lose feeling in a small area of your back. Caregivers will clean this area of your back. A needle will be put in, and fluid removed from around your spinal cord. The fluid will be sent to a lab for tests. The tests check for infection, bleeding around your brain and spinal cord, or other problems. Sometimes medicine may be put into your back to treat your illness.
  
  
• MRI: This test is called magnetic resonance imaging. During the MRI, pictures are taken of your head. An MRI may be used to look at the brain, muscles, joints, bones, or blood vessels. You will need to lay still during a MRI. Never enter the MRI room with an oxygen tank, watch, or any other metal objects. This can cause serious injury. Tell your caregiver if you have any metal implants in your body.
  
  
• Chest x-ray: This is a picture of your lungs and heart. Caregivers use it to see how your lungs and heart are doing. Caregivers may use the x-ray to look for signs of infection like pneumonia, or to look for collapsed lungs. Chest x-rays may show tumors, broken ribs, or fluid around the heart and lungs.

Copyright © 2008 Thomson Healthcare Inc. All rights reserved. Information is for End User's use only and may not be sold, redistributed or otherwise used for commercial purposes.

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.

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