what does coma
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- coma 1. (kō'mə) Plural comas. A state of deep unconsciousness, usually resulting from brain trauma or metabolic disease, in which an individual is incapable of sensing or responding to external stimuli.
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Coma-Like Deep Sleep There are major differences between a coma and a deep sleep. A coma is a long state of unconsciousness during which a person appears to be sleeping and does not respond to their environment. The medical community uses very specific parameters when defining a person in a coma. A person with a coma:
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What It Really Means to Be in a Coma Many people have learned almost all they know about coma by watching television, where coma is a condition from which recoveries are both predictable to viewers and miraculous to the characters. In reality, depending on the cause and severity of the coma, a recovery can be almost guaranteed or extremely unlikely. The definition of coma is any condition where the patient is unconscious with their eyes closed and unable to be aroused by even vigorous or painful stimulation. 1  This is not the same thing as sleeping since the brain does not go through the normal activity associated with sleep during a coma.
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- Coma is characterized by the absence of arousal (wake-. fulness, vigilance) and of awareness of self and environ-. ment [1]. Comatose patients have closed eyes, do not. speak, and do not arouse to verbal, tactile, or noxious. stimulus. Some causes of coma are readily identiﬁed while.
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Persistent vegetative state The vegetative state is a chronic or long-term condition. This condition differs from a coma: a coma is a state that lacks both awareness and wakefulness. Patients in a vegetative state may have awoken from a coma, but still have not regained awareness.
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vigil coma koma, a deep sleep] A state of unconsciousness from which one cannot be aroused. Coma is the most severe of the alterations of consciousness. It differs from sleep in that comatose patients will not awaken with stimulation. It differs from lethargy, drowsiness, or stupor (states in which patients are slow to respond) in that comatose patients are completely unresponsive.
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What Is a Medically Induced Coma? A coma is induced in patients who are at high risk of brain injury, either from physical trauma (as in the case of Giffords, who was shot in the head in 2011), a drug overdose, or a disease such as meningitis, rabies or status epilepticus (a long-lasting and life-threatening seizure).
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Drug-induced Coma Drug-Induced Coma Quick Facts. 1  Drug-induced comas are a medical state induced by a doctor. 2  A low controlled dose of a barbiturate drug is administered in order to maintain the patient’s coma state.hy the Brain Benefits From a Drug-Induced Coma. The brain is the most active organism in the body. It is due to its activity that we dream, wake up in the morning, and continue to breathe and experience regular heart beats no matter what our focus or activity.
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Broil a Perfect Steak 1 Close oven and sear the steaks for 3 minutes on one side, turn and sear the opposite side for 3 minutes. 2  DO NOT USE A FORK TO TURN STEAKS! 3  Once seared, set the oven to 500F and cook using this Time Chart.
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coma 1 noun, plural comas. 1. a state of prolonged unconsciousness, including a lack of response to stimuli, from which it is impossible to rouse a person.
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What is coma? Coma: Types, Causes, Treatments, Prognosis. A coma is a prolonged state of unconsciousness. During a coma, a person is unresponsive to his or her environment. The person is alive and looks like he or she is sleeping. However, unlike in a deep sleep, the person cannot be awakened by any stimulation, including pain.
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coma (kō′mə) n. pl. co·mae (-mē) 1. Astronomy The nebulous luminescent cloud surrounding the nucleus of a comet and composed of material evaporated from the nucleus when the comet is near the perihelion of its orbit. The nucleus and coma together form the head of a comet. 2. Botany A usually terminal tuft or cluster, especially a tuft of hairs on a seed, as on a willow or milkweed seed. 3. Physics A diffuse, comet-shaped image of a point source of light or radiation caused by aberration in an optical system.
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Coma: Types, Causes, Treatments, Prognosis 1 Hypoglycemia, or blood sugar that's too low, can also lead to a coma. This type of coma is usually reversible once the blood sugar is corrected.  Oxygen deprivation: Oxygen is essential for brain function. Cardiac arrest causes a sudden cutoff of blood flow and oxygen to the brain, called hypoxia or anoxia.
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Neuroscience of sleep Coma is a state of unarousable unconsciousness due to the disfunction of the brain's ascending reticular activating system (ARAS), which is responsible for arousal and the maintenance of wakefulness. (Young; Coma, 137).
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- The Glasgow Coma Scale (GCS) is a tool medical professionals use to objectively evaluate the degree to which a person is conscious or comatose. Also referred to as the “Glasgow Coma Score,” it operates on a scale of “3” to “15,” in which progressively higher scores indicate higher levels of consciousness
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Coma By Mayo Clinic Staff. 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.
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What Is a Medically Induced Coma? A coma is induced in patients who are at high risk of brain injury, either from physical trauma (as in the case of Giffords, who was shot in the head in 2011), a drug overdose, or a disease such as meningitis, rabies or status epilepticus (a long-lasting and life-threatening seizure).isks of a medically induced coma. Like most medical procedures, an induced coma carries some risks. One of the consequences that we do know of is an increased risk of infection, Souter said.
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- 1 Traumatic brain injuries, often caused by traffic collisions or acts of violence, are common causes of comas. 2  Stroke. 3  Reduced or interrupted blood supply to the brain (stroke), which may be caused by blocked arteries or a burst blood vessel, can result in a coma. 4  Tumors.
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Coma Coma Overview. A coma is a deep state of unconsciousness in which individuals do not consciously respond to stimuli in their environment. Coma can result from injury such as head trauma, or an underlying illness such as an infection or tumor, or toxins that enter the body. Patients in a coma are unable to think consciously and lack awareness of their surroundings, but they do retain basic life support functions, such as breathing and circulation.
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How Comas Work The word coma comes from the Greek word koma, which means state of sleep.. But being in a coma is not the same as being asleep. You can awaken someone who is asleep by talking to them or touching them.
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coma vigil a state of unconsciousness from which the patient cannot be aroused, even by powerful stimuli. Traumatic brain injuries are the most frequent cause; other causes include severe uncontrolled diabetes mellitus, liver disease, kidney disease, and neurologic conditions. Evaluation of a patient in a coma is comprehensive. The underlying cause should be identified so that appropriate treatment can be initiated.
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Coma In medicine, coma (from the Greek κῶμα koma, meaning deep sleep) is a state of unconsciousness in which a person: cannot be awakened; fails to respond normally to painful stimuli, light, or sound; lacks a normal wake-sleep cycle; and does not initiate voluntary actions.enerally, a person who is unable to voluntarily open the eyes, does not have a sleep-wake cycle, is unresponsive in spite of strong tactile (painful), or verbal stimuli and who generally scores between 3 to 8 on the Glasgow Coma Scale is considered in a coma.
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- Coma definition, a state of prolonged unconsciousness, including a lack of response to stimuli, from which it is impossible to rouse a person. See more.
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Brain Injury - Coma: Some Facts The common cause of coma is oxygen deprivation. Anoxia refers to a complete absence of available oxygen, while hypoxia describes someone who had available oxygen but at reduced levels for a period of time. Anoxemia describes when a person's blood supply (rather than lungs) lacks oxygen. Oxygen deprivation lasting longer than five to ten minutes can be fatal.
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Diabetic coma Diabetic coma is a reversible form of coma found in people with diabetes mellitus. It is a medical emergency. Hyperosmolar nonketotic coma (usually type 2) in which an extremely high blood sugar level and dehydration alone are sufficient to cause unconsciousness.
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Coma 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. Swift action is needed to preserve life and brain function. 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.