Quick Answer: How Long Can You Stay Unconscious?

Can a person die and come back to life?

Science is far from establishing when a body’s capacity for consciousness actually leaves it.

“We don’t know how long it takes after death for the cells to decay to such a point that no matter what you do, you can never get them back again,” Parnia says.

Which means that humans may take hours to fully die..

Is it bad to be unconscious for too long?

Potential complications of being unconscious for a long period of time include coma and brain damage. A person who received CPR while unconscious may have broken or fractured ribs from the chest compressions. The doctor will X-ray the chest and treat any fractures or broken ribs before the person leaves the hospital.

Can you survive if your heart stops for 20 minutes?

But it is not a final threshold. Doctors have long believed that if someone is without a heartbeat for longer than about 20 minutes, the brain usually suffers irreparable damage. But this can be avoided, Parnia says, with good quality CPR and careful post-resuscitation care.

Can you talk while unconscious?

Studies of patients’ memories of their unconscious state indicate that they heard and understood conversations. Lawrence (1995) found that unconscious patients could hear and respond emotionally to verbal communication.

What are the stages of a 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 person hear after they die?

Hearing is widely thought to be the last sense to go in the dying process. Now UBC researchers have evidence that some people may still be able to hear while in an unresponsive state at the end of their life.

How long can you live after your heart stops?

Most tissues and organs of the body can survive clinical death for considerable periods. Blood circulation can be stopped in the entire body below the heart for at least 30 minutes, with injury to the spinal cord being a limiting factor.

Does talking to coma patients help?

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.

Can a dying person choose when to die?

It can sometimes appear that people choose the moment to die. For example, people talk about someone hanging on until a relative arrives at their bedside, or until a special anniversary or birthday. A person who is confused, drowsy or unconscious may also wake up and be able to say a final goodbye before dying.

Why do coma patients cry?

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. Many professionals speak of this condition as a ”persistent vegetative state.

How long can you be unconscious before brain damage occurs?

Time is very important when an unconscious person is not breathing. Permanent brain damage begins after only 4 minutes without oxygen, and death can occur as soon as 4 to 6 minutes later. Machines called automated external defibrillators (AEDs) can be found in many public places, and are available for home use.

Can an unconscious person hear?

Twenty-five percent of all unconscious patients can hear, understand, and emotionally respond to what is happening in their external environment. However, because of their medical condition, they are incapable of moving or communicating their awareness.

Can you feel anything when unconscious?

The unconscious person may still feel pain as they did when they were awake. For this reason pain medication will continue to be administered but perhaps by another method such as the subcutaneous route (through a butterfly clip in the stomach, arm or leg).

How long can someone be in a coma and still wake up?

Recovering from a coma A coma usually only lasts a few weeks, during which time the person may start to gradually wake up and gain consciousness, or progress into a different state of unconsciousness called a vegetative state or minimally conscious state.

Can your heart still beat when you stop breathing?

The heart can beat on its own The heart has its own electrical system that causes it to beat and pump blood. Because of this, the heart can continue to beat for a short time after brain death, or after being removed from the body. The heart will keep beating as long as it has oxygen.