What are the 6 types of comas?

They are typically categorized in six ways:
  • Toxic-Metabolic Encephalopathy. When the kidneys or other organs fail, the body fails to dispose of any toxins correctly. ...
  • Cerebral Hypoxia. ...
  • Persistent Vegetative State (PVS) ...
  • Locked-In Syndrome. ...
  • Brain Death. ...
  • Medically Induced Coma.

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What is the most severe type of coma?

This is a state of severe unconsciousness. The person is unaware of their surroundings and incapable of voluntary movement. With a persistent vegetative state, someone may progress to wakefulness but with no higher brain function. With persistent vegetative state, there is breathing, circulation, and sleep-wake cycles.

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What are the 8 stages of coma?

Here are the major stages of coma that you need to know:
  • Stage 1: Unresponsiveness: ...
  • Stage 2: Early Responsiveness: ...
  • Stage 3: Agitation and confusion: ...
  • Stage 4: A higher level of responsiveness: ...
  • Traumatic brain injuries: ...
  • Stroke: ...
  • Lack of oxygen: ...
  • Infections:

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How long will a hospital keep someone in a coma?

Typically, a coma does not last more than a few days or couple of weeks. In some rare cases, a person might stay in a coma for several weeks, months or even years. Depending on what caused the person to go into a coma, some patients are able to return to their normal lives after leaving the hospital.

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What is the difference between a coma and a comatose?

Being comatose is being in a coma, unconscious and unable to communicate, often for long periods of time. A bad illness or unexpected accident or injury — especially to the head — can make you comatose and trapped inside a body that isn't working.

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Neurology – Coma: By Michel Shamy M.D.

16 related questions found

How long can you be in a coma before brain damage?

Severe brain injury is usually defined as being a condition where the patient has been in an unconscious state for 6 hours or more, or a post-traumatic amnesia of 24 hours or more. These patients are likely to be hospitalised and receive rehabilitation once the acute phase has passed.

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Can doctors tell how long a coma will last?

The chances of someone recovering from a coma largely depend on the severity and cause of their brain injury, their age and how long they've been in a coma. But it's impossible to accurately predict whether the person will eventually recover, how long the coma will last and whether they'll have any long-term problems.

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Can someone in a coma hear you?

Comatose patients do not seem to hear or respond. Speaking may not affect their clinical outcome; time spent with them takes time away from other, more "viable" patients. Comatose patients may, however, hear; many have normal brain-stem auditory evoked responses and normal physiologic responses to auditory stimuli.

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What happens after a coma patient wakes up?

People who do wake up from a coma usually come round gradually. They may be very agitated and confused to begin with. Some people will make a full recovery and be completely unaffected by the coma. Others will have disabilities caused by the damage to their brain.

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What are good signs someone is coming out of a coma?

Some examples of early responses to watch for are: Localized response: These are appropriate movements by the patient in response to sound, touch, or sight. Turning toward a sound, pulling away from something uncomfortable, or following movement with the eyes are examples.

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How long is too long in a coma?

A coma doesn't usually last longer than several weeks. People who are unconscious for a longer time might transition to a lasting vegetative state, known as a persistent vegetative state, or brain death.

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What is a Level 4 coma?

Level 4: confused - agitated. As the brain improves, it begins to “wake up” and may have difficulty controlling the level of response to the environment. This is called “agitation.” You will see the patient will have poor memory and be confused most of the day.

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What are the chances of surviving a medical coma?

Duration of coma

The longer a patient remains in a coma the poorer his or her chance of recovery and the greater the chance that he or she will enter a vegetative state (table 3). By the third day the chance of making a moderate or good recovery is reduced to only 7%, and by the 14th day is as low as 2%.

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What's the first best way to wake someone up from a coma?

Use objects with pleasant tactile sensations and different textures such as soft toys, silk scarves or books. Put a bunch of flowers in the person's room or spray their favourite perfume.

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Is coma progression to brain death?

Brain death is not the same as coma, because someone in a coma is unconscious but still alive. Brain death occurs when a critically ill patient dies sometime after being placed on life support. This situation can occur after, for example, a heart attack or stroke.

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Can someone in a coma cry?

A person may appear fine, but will not able to speak or respond to commands. Spontaneous movements may occur, and the eyes may open in response to external stimuli. Individuals may even occasionally grimace, cry, or laugh.

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Is coma like sleep?

Coma is a state of consciousness that is similar to deep sleep, except no amount of external stimuli (such as sounds or sensations) can prompt the brain to become awake and alert. A person in a coma can't even respond to pain. A wide range of illnesses, conditions and events can cause coma.

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Can people in a coma think?

'Coma patients can be subdivided into several types,' said Dr Guger. 'People who are genuinely in a coma have no cognitive function and no motor responses – they cannot think and they cannot move. But some people may appear to be in a coma even though they are in fact conscious to some degree.

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What percentage of coma patients wake up?

The majority of people (87 percent) who score a three or a four on the scale within the first 24 hours of going into a coma are likely to either die or remain in a vegetative state. On the other end of the scale, about 87 percent of those who score between 11 and 15 are likely to make a good recovery.

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How long does it take to wake up from a medically induced coma?

The length of a medically induced coma varies from person to person, depending on the severity of their condition. "Some patients can recover very quickly, others can take weeks to months," says Dr. Pappadakis. Those expected to be comatose for weeks or months must have surgery called a tracheostomy.

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What is the last stage of coma?

Stage 4: Higher Level of Responsiveness

A patient at this stage may not be fully aware of their limitations. Family and friends might notice some personality changes at this stage as well. The recovery process is different for everyone, and some patients could stay in one stage longer than the other.

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Why is a person put in a medically induced coma?

While trying to save your life, doctors may induce a coma. A medically induced coma effectively shuts down the patient's brain. As such, this medical course of action is a serious step in the treatment of individuals. Typically, doctors use the tactic to treat those who have suffered a serious traumatic brain injury.

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Do coma patients remember anything?

With that said, everyone who goes into a coma has a unique experience. Some have reported remembering certain events that happened while they were in the coma, while many others have reported not remembering experiencing much of anything while unconscious.

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Do coma patients know they were in a coma?

As many as 15 to 20 percent of patients who appear to be in a coma or other unresponsive state show these inner signs of awareness when evaluated with advanced brain-imaging methods or sophisticated monitoring of electrical activity.

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