On distingue ainsi : • les causes traumatiques : lésions cérébrales en cas d’accident de la route, d’agression ou de chute
Doctors normally order a battery of blood tests and a brain CT scan to try to determine what's causing the coma so that proper treatment can begin.A coma seldom lasts longer than several weeks.
On parle de coma lorsque le patient ne répond pas à la douleur, aux sollicitations verbales ou tout autre stimulus. Swift action is needed to preserve life and brain function. Cette condition dépend d'un dysfonctionnement des deux hémisphères cérébraux ou d'un endommagement de la formation réticulaire ascendant (également connu sous le système d'activation réticulaire est un complexe de neurones spécialisés dans le contrôle de l'état de veille et le rythme circadien). Comas are caused by an injury to the brain.
All rights reserved. Be prepared to provide information about the affected person, including: 1. En chiffres, entre 30% et 40% des personnes souffrant de lésions cérébrales graves présentent des troubles de la conscience.
Prompt medical attention is vital to treat potentially reversible conditions. Troubles ioniques dans le sang (trouble du sodium, de la calcémie…) qui peuvent être secondaires à une autre cause de coma. For example, if there is an infection that's affecting the brain, In general, treatment for a coma is supportive. Le coma peut être causé par plusieurs facteurs 1.Les causes toxiques sont très fréquentes : l’alcool, la drogue, les médicaments (sédatifs) ou une intoxication au monoxyde de carbone. People in comas are looked after in an intensive care unit and may often require full The prognosis for a coma varies with each situation.
Brain injury can be due to increased pressure, bleeding, loss of oxygen, or buildup of toxins. Le coma témoigne d'un dysfonctionnement cérébral sévère qui peut avoir différentes origines. What Causes a Coma?
Le terme « trouble de la conscience» désigne à la fois une altération du niveau de conscience (obtentation, stupeur, coma, etc.) Every person is different and it is best to consult with your doctor. The chances of a person's recovery depend on the cause of the coma, whether the problem can be corrected, and the duration of the coma. Le coma n'implique pas forcément de lésion cérébrale.
A coma occurs when a part of the brain is damaged, either temporarily or permanently. Even so, many patients can wake up after many weeks in a coma. Les causes métaboliques : Hypoglycémie (taux de sucre dans le sang très bas). Any noticeable signs or symptoms prior to losing consciousness 4. Comas that result from head injuries tend to have a higher rate of recovery than comas related to lack of oxygen.It can be very difficult to predict recovery when a person is a coma. "Mayo," "Mayo Clinic," "MayoClinic.org," "Mayo Clinic Healthy Living," and the triple-shield Mayo Clinic logo are trademarks of Mayo Foundation for Medical Education and Research. However, they may have significant disabilities.Brain Injury Association of America: "What is a Brain Injury? More than 50% of comas are related to head trauma or disturbances in the Treatment for a coma depends on the cause.
If the problem can be resolved, the person can often return to his or her original level of functioning. Hypertension artérielle très sévère et non contrôlée. © 1998-2020 Mayo Foundation for Medical Education and Research (MFMER). Because people in a coma can't express themselves, doctors must rely on physical clues and information provided by families and friends. A coma is a state of prolonged unconsciousness that can be caused by a variety of problems — traumatic head injury, stroke, brain tumor, drug or alcohol intoxication, or even an underlying illness, such as diabetes or an infection.A coma is a medical emergency. Any use of this site constitutes your agreement to the Terms and Conditions and Privacy Policy linked below. Some people who recover from a coma may have major or minor disabilities.Complications may develop during a coma, including pressure sores, bladder infections, blood clots in the legs and other problems.Mayo Clinic does not endorse companies or products.
A single copy of these materials may be reprinted for noncommercial personal use only.
Sometimes, though, if the Comas that result from drug poisonings have a high rate of recovery if prompt medical attention is received. People who are unconscious for a longer period of time may transition to a persistent vegetative state.Depending on the cause of a coma, people who are in a persistent vegetative state for more than one year are extremely unlikely to awaken.A coma is a medical emergency. Events leading up to the coma, such as vomiting or headaches 2. et une altération du contenu de la conscience (désorientation temporaire ou spatiale, ou difficulté à maintenir l’attention). Advertising revenue supports our not-for-profit mission.Check out these best-sellers and special offers on books and newsletters from Mayo Clinic.
As we would expect, the longer a person is in a coma, the worse the prognosis.
Causes. People close to the comatose patient should give doctors as much information as possible to help the doctors determine the cause of coma. A coma is a prolonged state of unconsciousness. Seek immediate medical care.Many types of problems can cause coma.