Guillain-Barré Syndrome



Personal Note:

Guillain-Barré Syndrome is something that has, through its affliction of my father, affected my life dramatically. Although it is too difficult to relay the entire "true-life" story of what my family has been through, hopefully you can understand from the descriptions below what this disease does to a person. Imagine that person being someone close to you, and then you can begin to understand what it has been like.

My father is home from the hospital now, after spending over 1 year there. He had varying diagnoses from "you will never regain movement of your lower body and will never progress more than you are now" to "we expect that you can make at least a 75% recovery". I am happy to say that he is walking aided, and is gaining strength day by day.

We are thankful he is home, and that the days on the respirator in I.C.U. are far behind us. Each day is a gift, and something that brings with it a little more strength, hope, and encouragement.

Kathleen



Taken from GBS.ORG

Guillain-Barré (ghee yan-bah ray) (GBS), Chronic Idiopathic Polyneuritis Demyelination (C.I.P.D.), Miller Fisher and other related syndromes are rare and unpredictable syndromes which can cause a person's life to go into utter chaos and turmoil. These syndromes, are disorders that consists of weakness and even paralysis of many of the body's muscles, along with abnormal sensations. The illness can be present in several ways, at times making the diagnosis difficult to establish in its early stages. The specific cause is not known. Research to date indicates that, the nerves of the person who has Guillain-Barré or related syndromes are attacked by the body's defense system against disease (antibodies and white blood cells). As a result of this attack, the nerve insulation (myelin) and sometimes even the covered conducting part of the nerve (axon) is damaged. This causes delay or change of the nerve "messages", between the sender (usually the brain, cortex or spinal column) and receiver (usually a muscle). The abnormal sensations and weakness quickly follow.




Taken from Guillain-Barré Syndrome Fact Sheet, National Institutes of Health, Bethesda, Maryland.


What is Guillain-Barré Syndrome?

Guillain-Barré (ghee-yan bah-ray) Syndrome is a disorder in which the body's immune system attacks part of the nervous system. The first symptoms of this disorder include varying degrees of weakness or tingling sensations in the legs. In many instances the weakness and abnormal sensations spread to the arms and upper body. These symptoms can increase in intensity until the muscles cannot be used at all and the patient is almost totally paralyzed. In these cases the disorder is life threatening -- potentially interfering with blood pressure, heart rate, and breathing -- and is considered a medical emergency. The patient is often put on a respirator to assist with breathing and is watched closely for problems such as an abnormal heart beat, infections, blood clots, and high or low blood pressure. Most patients, however, recover from even the most severe cases of Guillain-Barr??e syndrome, although some continue to have minor problems.

Guillain-Barré Syndrome can affect anybody. It can strike at any age and both sexes are equally prone to the disorder. The syndrome is rare, however, afflicting only about one person in 100,000. Usually Guillain-Barré occurs a few days or weeks after the patient has had symptoms of a respiratory or gastrointestinal viral infection. Occasionally pregnancy, surgery, or vaccinations will trigger the syndrome. The disorder can develop over the course of hours or days, or it may take up to 3 to 4 weeks. Most people reach the stage of greatest weakness within the first 2 weeks after symptoms appear, and by the third week of the illness 90 percent of all patients are at their weakest.

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What causes Guillain-Barré syndrome?

No one yet knows why Guillain-Barré strikes some people and not others. Nor does anyone know exactly what sets the disease in motion. What scientists do know is that the body's immune system begins to attack the body itself, causing what is known as an autoimmune disease. Usually the cells of the immune system attack only foreign material and invading organisms. In Guillain-Barré syndrome, however, the immune system starts to destroy the myelin sheath that surrounds the axons of many nerve cells, or even the axons themselves (axons are long, thin extensions of the nerve cells; they carry nerve signals). The myelin sheath surrounding the axon speeds up the transmission of nerve signals and allows the transmission of signals over long distances.

In diseases in which the nerve cells' myelin sheaths are injured or degraded, the nerves cannot transmit signals efficiently. That is why the muscles begin to lose their ability to respond to the brain's commands, commands that must be carried through the nerve network. The brain also receives fewer sensory signals from the rest of the body, resulting in an inability to feel textures, heat, pain, and other sensations. Alternately, the brain may receive inappropriate signals that result in tingling, "crawling-skin," or painful sensations. Because the signals to and from the arms and legs must travel the longest distances they are most vulnerable to interruption. Therefore, muscle weakness and tingling sensations usually first appear in the hands and feet.

When Guillain-Barré is preceded by a viral infection, it is possible that the virus has changed the nature of cells in the nervous system so that the immune system treats them as foreign cells. It is also possible that the virus makes the immune system itself less discriminating about what cells it attacks. Scientists are investigating these possibilities and others to find why the immune system goes awry in Guillain-Barre syndrome and other autoimmune diseases. The cause and course of Guillain-Barré syndrome is an active area of neurological investigation, incorporating the cooperative efforts of neurological scientists, immunologists, and virologists.

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How is Guillain-Barré Syndrome diagnosed?

Guillain-Barré is called a syndrome rather than a disease because it is not clear that a specific disease-causing agent is involved. A syndrome is a medical condition characterized by a collection of symptoms (what the patient feels) and signs (what a doctor can observe or measure). Because the signs and symptoms of the syndrome can be quite varied, doctors may find it difficult to diagnose Guillain-Barré in its earliest stages.

Several disorders have symptoms similar to those found in Guillain-Barré, so doctors examine and question patients carefully before making a diagnosis. Collectively, the signs and symptoms form a certain pattern that helps doctors differentiate Guillain-Barré from other disorders. For example, physicians will note whether the symptoms appear on both sides of the body (most common in Guillain-Barré) and the quickness with which the symptoms appear (in other disorders muscle weakness may progress over months rather than days or weeks). In Guillain-Barré, reflexes such as knee jerks are usually lost. Because the signals traveling along the nerve are slower, a nerve conduction velocity (NCV) test can give a doctor clues to aid the diagnosis. In Guillain-Barré patients, the cerebrospinal fluid that bathes the spinal cord and brain contains more protein than usual. Therefore a physician may decide to perform a spinal tap, a procedure in which the doctor inserts a needle into the patient's lower back to draw cerebrospinal fluid from the spinal column. Laboratory scientists, working with clinical neurologists, are conducting research that may help provide physicians with more precise and reliable diagnostic tests for this disorder.

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How is Guillain-Barré treated?

There is no known cure for Guillain-Barré syndrome. However, there are therapies that lessen the severity of the illness in most patients, and there are a number of ways to treat the complications of the disease.

Currently, plasmapheresis and high-dose immunoglobulin therapy are used in the more serious cases of Guillain-Barré syndrome. Plasmapheresis is a method by which whole blood is removed from the body and processed so that the red and white blood cells are separated from the plasma, or liquid portion of the blood. The blood cells are then returned to the patient without the plasma, which the body quickly replaces. Scientists still don't know exactly why plasmapheresis works, but the technique seems to reduce the severity and duration of the Guillain-Barré episode. This may be because the plasma portion of the blood contains elements that the immune system needs to function. When these elements are removed along with the plasma, the immune system is not able to attack the nervous system as effectively.

In high-dose immunoglobulin therapy, doctors give intravenous injections of the proteins that the immune system uses to attack invading organisms. Investigators have found that these immunoglobulins, when given to Guillain-Barré patients, can lessen the immune attack on the nervous system. Investigators don't know why this is, but some suggest that the immunoglobulins may overwhelm the immune system and keep it from attacking the nerve cells and their myelin sheaths.

The use of steroid hormones has also been tried as a way to reduce the severity of Guillain-Barré, but controlled clinical trials have not demonstrated that this treatment is effective.

Much of the treatment for this syndrome consists of keeping the patient's body functioning during recovery of the nervous system. This can sometimes require placing the patient on a respirator, a heart monitor, or other machines that assist body function. The need for this sophisticated machinery is one reason why Guillain-Barre syndrome patients are usually treated in hospitals, often in an intensive care ward. In the hospital, doctors can also look for and treat the many problems that can afflict any paralyzed patient--complications such as pneumonia or bed sores.

Often, even before recovery begins, caregivers may be instructed to manually move the patient's limbs to help keep the muscles flexible and strong. Later, as the patient begins to recover limb control, physical therapy begins. Carefully planned clinical trials of new and experimental therapies are the key to improving the treatment of patients with Guillain-Barré syndrome. Such clinical trials begin with the research of basic and clinical scientists who, working with clinicians, identify new approaches to treating patients with the disease.

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What is the long-term outlook for those with Guillain-Barré syndrome?

Guillain-Barré syndrome can be a devastating disorder because of its sudden and unexpected onset. In addition, recovery is not necessarily quick. As noted above, patients usually reach the point of greatest weakness or paralysis days or weeks after the first symptoms occur. Symptoms then stabilize at this level for a period of days, weeks, or, sometimes, months. The recovery period may be as little as a few weeks or as long as a few years. About 30 percent of those with Guillain-Barré still feel a residual weakness after 3 years. About 3 to 5 percent may suffer a relapse of muscle weakness and tingling sensations many years after the initial attack.

Guillain-Barré syndrome patients face not only physical difficulties, but emotionally painful periods as well. It is often extremely difficult for patients to adjust to sudden paralysis and dependence on others for help with routine daily activities. Patients sometimes need psychological counseling to help them adapt.

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What research is being done?

Scientists are concentrating on finding new treatments and refining existing ones. Scientists are also looking at the workings of the immune system to find which cells are responsible for beginning and carrying out the attack on the nervous system. The fact that so many cases of Guillain-Barré begin after a viral infection suggests that certain characteristics of these viruses may activate the immune system inappropriately. Investigators are searching for those characteristics. As noted previously, neurological scientists, immunologists, virologists, and pharmacologists are all working collaboratively to learn how to prevent this disorder and to make better therapies available when it strikes.

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© 1996 Kathleen Lidbetter Lawrence
kjl@yorku.ca