Human Brain- The mystery organ |
" What happens after
death?? "
Well the answer for this question is quite debatable and
brings a dichotomy between science and spirituality. This question spoiled many
minds and even led those to commit suicide in an act of exploring the answer
for this question. We are actually not
interested in discussing spiritual concepts here but we would like to share the
advancement that science had achieved in answering the above question.
Though modern day science is at a very far distance from
reviving a person from death, it succeeded to unleash an extra physical state
before eternal death. This physical state called “CLINICAL DEATH” is considered
to be the ultimate physical living state that would exist in one’s life.
What is Clinical death?
Clinical death is a medical term that describes the state in
which the respiration and heart beat are completely ceased. Heart beat and
respiration are the two factors that propel the human life and when these two
key factors cease in a person, he will be considered Clinically dead and can reach
the eternal death in the absence of timely medication and treatment. It is key to observe the word clinically dead
because before the advancements in cardiac treatments, a person is considered
dead if his heartbeat and breathing gets ceased. With the introduction of
“Cardio Pulmonary Resuscitation (CPR)” techniques, the number of victims
revived from clinical death increased greatly. It means even when the heart
stops beating and the victim cannot breathe any more, he/she can be survived
with timely and professional CPR techniques by restarting the blood circulation
process. It is with these kinds of victims the answer to the above question
lies (who had experienced a near death popularly called Near Death Experience
which is nothing but survival from clinical death).
What happens during clinical death?
This section seems a bit ridiculous but these were revealed
after a lot of research with the people who had experienced a near death in
their lives. Out of all the feelings, few are the impressions based on the life
style that they spent in their lives. Some of the feelings include.
1) Feel of levitation :- which makes the body very
light which gives a feeling of getting separated from the body.
2) Unconditional love and serenity: - This might sound a bit spiritual but majority of the victims declared that they had experienced this sort of unconditional love when their heartbeat is about to stop. Also few declared the presence of their loved ones who were already demised and some experienced a recap of their whole life in a glance.
3)Observation of the medical personnel who are
performing CPR:- When the victim is clinically dead , the medical personnel
starts performing CPR and the victim who is clinically dead can visualize what
is going on there but cannot respond to it until his heart starts picking its
rhythm.
Along with the above
expressions, one common feeling every one experienced in a clinical death is visualizing
light. The victims under clinical death encounter a bright light hitting their
eyes (just like plunging their face into a beam of powerful light) which was
then followed by complete darkness.
These are the feelings that were recorded from personal
experiences. But why should we believe all these stuff?
Yes!! Why should we believe a person’s experiences without
any established proof. Science believes in proofs not experiences. Experience
will be treated as a fact when it is coupled with a valid proof. A study was
initiated in the University of Michigan, to validate the above experiences. If
you consider the above statements, they indirectly infer that the brain of the
victim is still active even after the cardiac arrest. It is only with the aid
of brain that we can think, assume and visualize. Here lies an interesting
question. How can the brain function when the victim suffered a cardiac arrest?
The same sort of research when done on rats revealed a shocking truth. Brain
has always been a mystery organ in our body and the way we dream has no solid
explanation even today. When the brain activity of the rats was examined, the researchers
observed a surge in the brain activity for about 30 seconds after the rat’s
heart stopped pumping. It completely disproved our assumption of reduced brain
activity under clinical death. It is at that period right after the cardiac
arrest, the brain becomes hyper active and especially the cells that are
present in the visual cortex area were so active. So, this study on rats can be
related to humans but cannot apply it as such to the heavy brains that we have.
But this could possibly explain the Near death experience as the hyper active
brain activity prevailing in that span of time.
CPR is an absolute life saviour and it is a must do in every
cardiac arrest. If the victim fails to respond even after considerable CPR then
the doctor declares a person to be legally dead. When the heart stops pumping
oxygenated blood then all the parts of the body starts to accumulate an injury
called “ISCHEMIC INJURY” which is caused due to the scarcity of oxygenated
blood. Different organs of the body have different time limits to sustain from
ischemic injury. The organs present in the lower part of the body below heart
can withstand the scarce oxygenated blood availability for around half an hour
after cardiac arrest. This is the reason why we can re attach the detached
limbs even after few hours. Brain in contrast reacts sensitive to ischemic
injury. The neurons in the brain will accumulate considerable ischemic injury
right after 3 minutes of cardiac arrest. It is within this time we need to to regenerate pumping process to resuscitate
the person. Some often experience brain death even though they were saved from
clinical death, this is because of the considerable damage that was already
done to the brain cells. So, when the heart stops pumping oxygenated blood to
the brain, it starts accumulating ischemic injury and thus we need to avoid the
injury by pumping the blood by artificial means, this is what CPR is intended
to do.
Today heart attack has become the key factor for most of the
deaths. This is due to stress filled lives and our unhealthy food practices.
When a person suffers from cardiac arrest he will suddenly collapse to the
ground. The usual practice we do is to call for an emergency service and wait
for the ambulance to arrive. This approach is not correct and proper first aid
and CPR can better the chances of saving a person’s life. There are many kinds
of resuscitation techniques in practice among which the Hands-only CPR and CPR
through shock treatment above person’s chest. Hands-only CPR need no equipment
and your hands are enough to serve the purpose. So, during emergencies instead
of waiting for the emergency services to arrive the bystanders must take a
responsibility to perform hands only CPR. This approach may not enhance the
condition but can stop further deterioration. Every second is very important
when a victim is suffering from a cardiac arrest so it is always better to do
something other than nothing until the medical services arrive at the scene.
American heart association also suggested and started their campaign to bring awareness
among the common people towards Hands-only CPR. Even though we don’t have any
medical experience we can perform CPR and if we can follow few steps before
performing CPR, it can bring out more than satisfactory results.
How can common public perform CPR for the victim in
emergency?
Several CPR guidelines were framed separately for experts
and laymen to achieve fair results after performing hands-only CPR. The CPR
process normally consists of three activities.
They
are:-
a)
Chest compression (C)
b)
Air way inspection (A)
c)
Rescue Breathing (B)
So, when you observe a person who was suddenly collapsed,
then what you need to do is to check whether the victim is conscious or not. If
he/she is conscious then talk to them and give a sort of belief and start the process
of CPR. Make the person lie on the ground and allow fresh air to pass through
them. Locate the center point of the chest where there will be dent in between
the rib cage. “CAB” is the order in which you need to follow. Don’t waste time
in probing for life signs like pulse and airway movement. Start straight away
with the chest compression (C) and the pace at which the chest compression is
to be done is fixed a 100 compression /minute. Each compression must compress
the persons chest to about 2 1/2
inches (approximately 5cm) this movement must be done without any pause until
the emergency service arrives at the scene. Meanwhile you need to look for life
signs in the person by observing the airway movement (airway is the path
through which air enters the lungs). Occasionally you need to perform rescue
breathing for the person by exhaling air into their mouth. We need not master
the art of CPR but our acumen at the time of emergency and little knowledge on
Hands-only CPR can save a life and thereby can save a family. In order to
perform CPR which earns fruitful results one must follow the CPR guidelines
framed, which are very lucid and can be understood by the non-medical personnel also.
The CPR guidelines can guide you the way to perform CPR under different conditions
and to locate the place on victim’s chest to perform chest compression so that
the effort you put in will not go in vein. Click here to download CPR guidelines.
Saving other’s life is the greatest thing that one can achieve
in their lives. No achievement can fetch you an immense satisfaction than this
and so everybody must identify the need of reacting during emergencies. These
kinds of hands only CPR techniques must be considered as basic first aid and
must be added to the curriculum. Finally we conclude this essay with a few
words, Life is a nature’s gift and it is completely the right of Mother Nature
to take away that life from us and we don’t have any rights to shove our own
life and of others into danger. All we have to do is to:
" LIVE & HELP OTHERS
LIVE "
what is difference between lumped and distributed circuits?why circuit theory is not used above 1Mhz frequency?
ReplyDeleteHi Sasidhar,
DeleteI had drafted an explanation in a document.
Please click this link which takes you to the document with explanation.
https://docs.google.com/document/d/1698ZTRzR12Dknxcb-sC56Yw3syTV9QTwK2Icvgvmb-U/pub
kindly provide your feedback on the answer.
Thank You.
The presence of a dependent source makes a n/w active.But,a n/w with independent source is passive.but a dependent source acts as a source in the presence of atleast one independent source.can you explain the exact concept behind that?
Deletethanks for the previous answer.its really helpful
Delete