ARE YOU DEAD WHEN YOUR HEART
STOPS?
A
person’s hearing is
thought to be the last sense to go in the dying process, so never assume the
person is unable to hear you.
Talk as if they can hear you,
even if they appear to be unconscious.
Persons who were decapitated have
been seen immediately after their heads were cut off to actually move their
lips as if trying to speak. Imagine the lips saying, “Read my lips you
asshole.”
Young children who have drowned in
freezing water have regain full consciousness soon after they were rescued.
Bone, tendon, and skin can survive
as long as 8 to 12 hours.
The brain, however, appears to accumulate ischemic injury faster than any other
organ. Without special treatment after circulation is restarted, full recovery
of the brain after more than 3 minutes of clinical death at normal body
temperature is rare.
According to new research, people
can be aware that they are physically dead after their heart has stopped
beating. This suggests that the brain and consciousness seems to work even
after the body has stopped working. Dr Sam Parnia, director of critical care
and resuscitation research at NYU Langone School of Medicine in New York City,
and his team looked at people who had cardiac arrest and then were successfully
resuscitated back to life.
The team looked at
near-death-experiences of 2060 patients included in the study. Of these, 330
individuals had survived a resuscitation effort. Among these 140 patients could
complete a questionnaire that shed light on what happens when the heart has
stopped functioning and the brain still works. Much of these reports of near
death experiences of seeing flashes of light and tunnels of light etc. were
mostly anecdotal in nature. This is the first and largest study that shows exactly
what happens during this critical time despite a large proportion of patients
who are being successfully revived due to advances in medicine.
The study is called AWARE that
dealt with awareness during resuscitation which reveals that patients having
these near-death-experiences may even hear their own deaths being declared by
doctors.
The researchers asked and analyzed
several questions regarding the true mental experiences of these patients and
managed to distinguish them from the hallucinations that could be commonly appeared
among these patients. The 140 surviving patients completed the interviews and
recalled the events occurring during their near-death-experiences.
Results
showed that 39 percent of the patients had some form of awareness before their
resuscitation could begin and after their hearts had stopped beating. Several
patients recalled feeling either peaceful or fearful such as being dragged
under water.
One
third of the patients reported exaggerated slowing or speeding up of time. Bright
lights and illusions were also reported by the patients. Memories of the time
seem to fade away quickly. A substantial number of individuals reported having
full awareness of what was happening around them, the resuscitation efforts and
the conversations. The details they revealed could be matched to the doctors
and nurses who were part of the resuscitation team.
Dr. Sam Parnia said that
death is defined as the time when the heart has stopped beating. The blood from
the heart then fails to reach the brain to sustain it. This means all the
reflexes at the base of the brain including “gag reflex” or “pupil reflex in
the eyes” are all lost almost instantaneously. But this study reveals that
brain energy may not be completely depleted.
The cerebral cortex of the brain
that is responsible for thinking and processing the information from the five
senses, also shows no activity within 2 and 20 seconds of the heart stopping.
No brain waves can thus be detected there. This starts the slow death of the
brain cells. However the actual time to complete brain death may take hours
after the heart has stopped.
If
the entire brain stops functioning, it means that everything stops, including
all the parts pf your brain that keep you functional, like your heart beat and
your breathing.
If
the cortex of your brain is not functioning, you will get stuck in a vegetative state since the
only thing left are the older/basic structures that concern themselves with
bodily functions. So you would probably keep breathing, your heart would continue
to keep beating, digestions would
continue. However, the lights are out. You won’t hear anything, taste anything,
smell anything or be aware of anything or even be thinking or moving. Those abilities
were all in the cortex which is no longer functioning. It is pointless to keep living in a
vegetative state.
In
1972, I was invited to give a speech to doctors and nurses in the Toronto
General Hospital about euthanasia. Before I gave my speech, I was taken to a
small room were a six-year-old boy was in a large crib. I was told that when he
was born, it was discovered that he couldn’t move his limbs, hear, see, or feel
anything and yet, when they fed him via a tube, he smiled when certain liquids
were given to him. That means that his ability to taste was functioning. He
could breath and his heart was beating and his bodily functions were active. He
would be fifty-one years old today if he wasn’t euthanized which may have been a
merciful thing to do for him if he was
given that way to escape the boredom he was enduring all those years.
In the moments before death, the
heart plays a central role. As the heart
stops beating and blood stops flowing, the rest of the body slowly shuts down.
But new research suggests this view may be wrong.
Scientists studied the heart and brain activity of
rats in the moments before the animals died from lack of oxygen, and found that
the animals' brains sent a flurry of signals to the heart that caused
irrevocable damage to the organ, and in fact caused its demise. When the
researchers blocked these signals, the heart survived for a longer period.
If a similar process occurs in
humans, then it might be possible to help people survive after their hearts
stop by cutting off this storm of signals from the brain, according to the
study published today (April 6, 2015) in the journal Proceedings of the National Academy of Sciences.
"People naturally focus on
the heart, thinking that if you save the heart, you'll save the brain,"
said study co-author Jimo Borjigin, a neuroscientist at the University of Michigan Medical School in
Ann Arbor. But her team found something surprising. "You have to sever the
chemical communication between the brain and heart in order to save the
heart," Borjigin told Live Science,
adding that the finding is "contrary to almost all emergency medical
practice."
Every year, more than 400,000
Americans experience cardiac arrest — which is when the heart
stops beating. Even with medical treatment, only about 10 percent survive and
are discharged from the hospital, according to the American Heart Association.
If the doctors can open the chest and sever the chemical communication
between the brain and heart in time, the lives of heart attack victims can be
saved. Of course if the victim’s hearts fail and are not beating very soon
after and they are not in a hospital,
there will be no way their lives
can be saved in time.
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