A person in a coma lies with their eyes closed and doesn't respond to their environment, voices or pain. A coma usually lasts for less than 2 to 4 weeks, during which time a person may wake up or progress into a vegetative state or minimally conscious state. Read more about comas.
noun, plural sem, i, co, mas. a light coma from which a person can be roused.
Furthermore, are you conscious in a coma? In coma, which typically is present for the first one to two weeks after brain injury, patients are not awake or aware, meaning that they do not open their eyes, have only reflex responses and are unaware of those around them. If a coma lasts more than two or three weeks, it evolves into the vegetative state.
A minimally conscious state is severe but not complete impairment of awareness that results from widespread damage to the cerebrum (the part of the brain that controls thought and behavior). A minimally conscious state may result from brain damage, or it may follow a vegetative state as people recover some function.
four weeks .
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Other comas caused by a traumatic brain injury might only last a few days. And medically induced comas are comas that a person is intentionally placed under. Doctors know exactly how long the coma will last and can wake the patient up if it's absolutely necessary.
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. It also can be permanent.
The name vegetative state was chosen to refer to the preserved vegetative nervous functioning, meaning these patients have (variably) preserved sleep-wake cycles, respiration, digestion or thermoregulation. The term persistent was added to denote that the condition remained for at least one month after insult.
Their brains often show no signs of the normal sleep-wakefulness cycle, which means they are unlikely to be dreaming. Yet many people who have recovered from comas report dreams into which something of the outside world penetrated. Whether they dream or not probably depends on the cause of the 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.
According to first-hand accounts from people who have suffered a coma, the answer is yes. Can a coma cause death? A coma itself will not directly cause the death of a patient, but the underlying cause of the coma can. A comatose state might also hide other medical problems that would be obvious in a conscious person.
Coma patients also need nurses to take care of all the bodily maintenance that alert people rarely consider. Toilet care can mean catheterization and periodic emptying of a bag, or changing diapers as soon as a patient experiences incontinence.
Sigmund Freud divided human consciousness into three levels of awareness: the conscious, preconscious, and unconscious. Modern psychological approaches to understanding consciousness include developmental, social, and neuropsychological; each contribute a different understanding of what consciousness might be.
Unresponsive Wakefulness Syndrome, or UWS, is a result of a traumatic brain injury (TBI), which causes the brain to halt the ability to create thoughts, experience sensation, and remember past events. Patients in a vegetative state are awake, but show no signs of awareness.
A comatose patient may open his eyes, move and even cry while still remaining unconscious. His brain-stem reflexes are attached to a nonfunctioning cortex. Reflex without reflection.
This is the default view and it asserts that there is conscious experience in sleep only when we dream. Since it is also widely believed that dreams occur only in REM sleep, it is generally assumed that there is no sleep consciousness outside of REM sleep.
The severity of brain damage can vary with the type of brain injury. A mild brain injury may be temporary. It causes headaches, confusion, memory problems, and nausea. In a moderate brain injury, symptoms can last longer and be more pronounced.
The length of time a patient is in a medically induced coma is "largely dependent on the disease that you're treating, " Souter said. In most cases, a coma is induced for a few days up to two weeks; induced comas longer than a month are extremely rare.
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.
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