What is the difference between brain dead and coma?

Brain death: These patients are no longer alive. Coma: These patients are alive, but in a state of eyes-closed, depressed consciousness from which they cannot be aroused. Coma is distinguished from brain death by the presence of brain stem responses, spontaneous breathing or non-purposeful motor responses.

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In this manner, is brain dead and coma the same thing?

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.

Secondly, how do you know if a person is brain dead? Sometimes, when a person is declared brain dead, their heart may still be still beating and their chest may rise and fall with every breath from the ventilator. The skin might be warm and a person who is brain dead may appear to be resting.

One may also ask, what happens to the brain during a coma?

Someone who is in a coma is unconscious and will not respond to voices, other sounds, or any sort of activity going on nearby. The person is still alive, but the brain is functioning at its lowest stage of alertness. You can't shake and wake up someone who is in a coma like you can someone who has just fallen asleep.

Can brain dead patients respond to stimuli?

PVS can be a controversial diagnosis, since patients with locked-in syndrome are fully conscious, but similarly unable to communicate or respond to stimuli.

Related Question Answers

What are the stages of coma?

Three stages of coma DOC includes coma, the vegetative state (VS) and the minimally conscious state (MCS). These disorders (see sidebar at right for further information about each of these stages) are among the most misunderstood conditions in medicine.

Can a brain dead person hear?

This gives us the ability to use our senses -- to see, taste, smell, hear and feel. "Brain death" means both the upper and lower part of the brain are not functioning. That command center of the body that regulates the central nervous system is unable to perform. However, some function, such as a heartbeat, may linger.

Can a person who is brain dead open their eyes?

A person who is brain dead is dead, with no chance of revival. Coma: A state of profound unresponsiveness as a result of severe illness or brain injury. Patients in a coma do not open their eyes or speak, and they do not exhibit purposeful behaviors. In general, comas last just a few days or weeks.

When can you take someone off life support?

Doctors usually advise stopping life support when there is no hope for recovery -- your organs are no longer able to function on their own. Keeping the treatment going at that point may draw out the process of dying and may also be costly. Choosing to remove life support usually means you'll die within hours or days.

Can a brain dead person pass urine?

Since the body of a brain dead person can still have a heartbeat, can still produce urine, and can still accomplish oxygen exchange with the help of a breathing machine, those who have not dealt with brain death may conclude that at least a part of the patient is still alive and perhaps the other parts are on the mend

Has anyone survived brain death?

functioning after considerable therapy. However no one can recover from brain death. If the clinician has any doubt as to whether there can be even minimal recovery, brain death is not declared. A determination of brain death means that the patient has died; brain death is irreversible.

How long can brain dead person live?

There is very little research on just how long the body of a brain-dead person can be maintained. The discussion of brain death dates back to the 1950s in France with six patients who were kept "alive" for between two and 26 days without blood flow to the brain.

What happens when you take someone off life support?

Stopping Life Support Choosing to remove life support usually means that the person will die within hours or days. The timing depends on what treatment is stopped. People tend to stop breathing and die soon after a ventilator shuts off, though some do start breathing again on their own.

What causes a person to go into a coma?

Comas are caused by an injury to the brain. Brain injury can be due to increased pressure, bleeding, loss of oxygen, or buildup of toxins. The injury can be temporary and reversible. When the brain swells as a result of trauma, the fluid pushes up against the skull.

How long can you be in a coma?

Comas can last from several days to several weeks. In more severe cases a coma may last for over five weeks, while some have lasted as long as several years. After this time, some patients gradually come out of the coma, some progress to a vegetative state, and others die.

Does talking to someone in a coma help?

Familiar Voices And Stories Speed Coma Recovery Patients in comas may benefit from the familiar voices of loved ones, which may help awaken the unconscious brain and speed recovery, according to research from Northwestern Medicine and Hines VA Hospital.

How do you tell if you're in a coma?

The signs and symptoms of a coma commonly include:

1. Closed eyes.
2. Depressed brainstem reflexes, such as pupils not responding to light.
3. No responses of limbs, except for reflex movements.
4. No response to painful stimuli, except for reflex movements.
5. Irregular breathing.

How do you treat a coma?

Doctors may give breathing assistance, blood transfusions and other supportive care. Emergency personnel may administer glucose or antibiotics intravenously, even before blood test results return, in case of diabetic shock or an infection affecting the brain. Treatment varies, depending on the cause of the coma.

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

A coma is usually said to last no longer than four weeks, but post-coma unresponsiveness may last from months to years. Recently, programs that use sensory or physical stimulation to accelerate the healing process and bring someone out of a coma have been used in the United States and claim high levels of success.

Can someone in a coma open their eyes?

Individuals in this condition do not open their eyes; at best, they will show some reflex movements of the limbs. Coma rarely lasts longer than two to five weeks. Those who regain consciousness typically do so within days. At the times when they seem to be awake, their eyes open and sometimes wander.

How long can someone be unconscious?

What are the long term effects of being knocked unconscious? It depends on the severity of the injury. If you lose consciousness briefly, and suffer a concussion, 75 to 90 percent of people will fully recover in a few months. But severe damage to the brain can cause unconsciousness for days, weeks, or even longer.

Do brain dead patients wake up?

A patient may have their eyes open and look like they're awake, but if the brain is severely damaged they may have no awareness of their surroundings. We call this a vegetative state. On the other hand, people who are in a coma are not awake and have no awareness of themselves or their environment.

Can brain dead person feel pain?

Does an individual feel any pain or suffer after brain death is declared? No. When someone is dead, there is no feeling of pain or suffering.

Can you live without a brain?

Since it controls vital functions such as breathing, swallowing, digestion, eye movement and heartbeat, there can be no life without it. But the rest of the brain is obviously capable of some remarkable feats, with one part able to compensate for deficiencies in another.