Custom Search

Wednesday, October 28, 2009

Coma


COMA
What is a Coma?
Coma is an extended period of unconsciousness from which a person cannot be aroused even with the most painful stimuli. Coma is not a disease. It is a symptom of a disease or a response to an event, such as a severe head injury, seizure or metabolic problem. Most comas do not last longer than four weeks. Some people in a coma shift to a persistent vegetative state, in which breathing, maintaining normal blood pressure, digesting and eliminating foods continues without the patient's awareness. The vegetative state can last for years or decades. The outcome of a coma ranges from full recovery to death. Whether a person recovers, and to what extent, depends upon the cause of the coma and the type and extent of the brain damage.
A coma involves two different concepts: Reactivity and perceptivity.
The perceptivity concept refers to responses of the nervous system to learned stimuli. These types of stimuli may be learned through language or communication skills.
The reactivity concept refers to the inborn functions of the brain. These functions include the eyes, ears, responses to pain, wakefulness and turning ones head toward a sound of movement. These movements are also called reflexive movements.
A person in a coma does not experience reactivity or perceptivity. The patient can not be aroused by calling their name or experiencing pain.
Symptoms of a Coma
The main symptom of a coma is the inability to be aroused to consciousness. Other symptoms are: Lack of self-awareness, Lack of a sleep-wake cycle, Lack of purposeful movements, Lack of suffering and Impaired breathing.
What Causes a Coma?
A coma can be caused by a variety of things. The most often cause of coma is severe head injury. Other causes are: consumption of a very large amount of alcohol (toxic or metabolic coma), diabetes, morphine, shock or hemorrhage. Treatment varies depending on the cause. Overall, in coma cases, damage to the brain's "thinking, and life support centers" have occurred. When damage has occurred, bleeding in the brain, swelling and congestion of the damaged tissue is present. In extreme cases, brain swelling is so great that portions of the brain must be forcible squeezed out of the skull. This dead or "dying" tissue is then surgically removed. An alternative to squeezing portions of the brain out of the skull is to saw off the skull and place it in a cold storage to better accommodate the swollen brain.
Generally, coma is commonly a result of trauma, bleeding and/or swelling affecting the brain. Inadequate oxygen or blood sugar (glucose) and various poisons can also directly injure the brain to cause coma.
Trauma
Minor head injuries can cause brief loss of consciousness, but the brain is able to turn itself back on. Similarly, patients with seizures become unconscious - but gradually waken relatively quickly. Those people who cannot respond after head injury usually have had significant force applied to their head and brain.
The skull is a rigid box that protects the brain. Unfortunately, if the brain is injured and begins to swell (edema), there is no room for the additional fluid. This causes the brain to push up against the sides of the skull and it then compresses. Unless the pressure is relieved, the brain will continue to swell until it pushes down onto the brain steam, which then damages the RAS, which subsequently affects blood pressure and breathing control centers.
The affect of trauma on the brain is not predictable. It may or may not cause significant injury. If the brain is shaken, shear injury may occur, where the nerve connections within the brain are damaged. Coma may occur even with a normal CT scan in this situation. Similarly, head trauma may cause swelling of the brain without any bleeding, and coma may be the result.
Head trauma can cause different types of brain injury. The injury can occur to the brain tissue itself or may cause bleeding to occur between the brain and the skull. Computerized Tomography (CT) of the head can identify most bleeding from trauma.
Bleeding (Hemorrhage)
Intracerebral hemorrhage (intra= within + cerebral=brain + hemorrhage=bleeding) may be small, but it is associated swelling that may cause damage

What happens during a coma?
There are different stages of a coma. Most people believe that a person in a coma is in a deep sleep. This is not entirely true. Some stages of coma resemble a deep sleep but not all. The progress of coma is measured by the patient's increasing awareness of external stimuli. There are many levels of coma which the patient will pass through as functionality increases. Depending on the stage, a person in a coma may make movements, sounds and experience agitation. Coma patients may also have reflex activities that mimic conscious activities. Sometimes, coma patients must be restrained to prohibit them from removing tubes and IVs.
Emerging from a Coma
When a person begins to emerge from a coma, they begin to react to certain stimuli. However, to regain consciousness, both reactivity and perceptivity must be present. Reactivity and perceptivity are necessary for a state of awareness. It is often the case that some parts of perceptivity such as speech and self care must be relearned.
A beneficial Coma
Sometimes a coma may be chemically induced by a doctor to aid in medical treatment and recovery. This usually happens during a head injury.
Coma Statistics
Every ten minutes head injury claims the life of another child.
Head trauma is the number one cause of death and disability among people between the ages of 1 and 44.
About 5% to 10% of all coma patients are incapable of conscious behavior, and end up vegetative, which most of the public think of as prolonged coma.

1 comment:

  1. My name is hoover, my 18 years old daughter, Tricia was diagnosed of herpes 3 years ago. ever since then,we have been going from one hospital to the other. We tried all sorts of pills but all efforts to get rid of the virus was futile. The blisters kept on reappearing after some months. My daughter was making use of Acyclovir tablets 200mg. 2 tablets every 6hours and fusitin cream 15grams. and H5 POT. Permanganate with water to be applied 2x a day but all still show no result. So I was on the internet some months back, to sought for any other means of saving my only child. just then, i came across a comment on dr imoloa herbal treatment and decided to give it a try. i contacted the him and he prepared some herbs and sent it to me together with guidelines on how to use the herbs through DHL courier service. my daughter used it as directed dr imoloa and in less than 14days, my daughter regained her health.. You should contact Dr imoloa today directly on his email address for any kind of health challenge; lupus disease,  mouth ulcer,  mouth cancer, body pain, fever, hepatitis A.B.C.,   syphilis,  diarrhea,  HIV/AIDS,  Huntington's Disease,   back acne,  Chronic renal failure,   addison disease,  Chronic Pain,   Crohn's Disease,   Cystic Fibrosis,  Fibromyalgia,   Inflammatory Bowel Disease,  fungal nail disease, Lyme Disease, Celia disease, Lymphoma, Major Depression,  Malignant Melanoma,   Mania,  Melorheostosis,   Meniere's Disease,  Mucopolysaccharidosis , Multiple Sclerosis,  Muscular Dystrophy,  Rheumatoid Arthritis, Alzheimer's Disease, parkison disease, vaginal cancer, epilepsy,  Anxiety Disorders, Autoimmune Disease,   Back Pain,  Back Sprain,   Bipolar Disorder,  Brain Tumour,  Malignant,   Bruxism, Bulimia,  Cervical Disk Disease, cardiovascular disease, Neoplasms, chronic respiratory disease,  mental and behavioural disorder,     Cystic Fibrosis,   Hypertension, Diabetes, asthma,  Inflammatory autoimmune-mediated arthritis.  chronic kidney disease, inflammatory joint disease,  impotence,  feta alcohol spectrum,  Dysthymic Disorder,   Eczema, tuberculosis,  Chronic Fatigue Syndrome, constipation, inflammatory bowel disease.  and many more; contact him on email- drimolaherbalmademedicine@gmail.com./ also on  whatssap-+2347081986098.

    ReplyDelete