What is brain death and heart death?

In layman's terms; The heart and brain are two different organs!

There is no such thing as brain cancer in this world.

and heart cancer. Even if there is a lesion in both organs, it is usually a brain tumor or heart disease.

Wait. After the heart dies, the blood circulates and the brain gradually dies ......After brain death, if the heart is normal and the heart is not deprived of oxygen, it will continue to beat, and drugs or instruments can be used to maintain life, and the person enters a vegetative state.

Heart death and brain death are basically death, heart death means death in China, the doctor declares death, if brain death, the patient's family does not give up**, the hospital still has to continue to use instruments to maintain signs of life until the heart or other organs fail and die ......

In foreign countries, brain death generally occurs, the hospital declares the death, and the ** ...... stopsWhen a person dies, of course, it depends on how he died. Normal illness and death are usually preced......ed by cardiac death

Accidental injuries Serious head injuries, usually preceded by brain death, ......

Not at the same time.

Brain death is in the vast majority of cases caused by external injuries caused by brain injury, and some are caused by some infections, brain death is actually a special vegetative state, this situation is the brain loses function, but other organs of the body can continue to maintain, this situation is basically not death in China, because in this state can also be maintained by medical machines, as long as the family does not give up, that is to maintain until the death of other organs.

Once the heart stops beating, then other organs will soon enter failure because the blood supply stops, and the brain will fall into a state of hypoxia because the blood stops, which eventually leads to brain death, and the heart dies and stops beating and other organs will die together, so heart death is called real death.

In some foreign places, the way they identify is that brain death is also death, and our domestic brain death is not recognized as death, heart death will be said to be death, brain death can be used in other parts of the body to maintain life through special methods, but it requires a lot of financial resources to support, this kind of ordinary family can not bear, so under normal circumstances, brain death is actually not important with the result of heart death, because you can't bear such financial pressure.

Why not identify brain death as real death, mainly because other organs are still alive, and can also maintain life through other means, heart death is completely different, brain death as long as you have money and do not give up, the hospital can help you maintain the patient's life, provided that you can afford this cost, of course, do not identify brain death as real death, in fact, it is also a kind of respect for life, believe that life has miracles.

At the same time, entering deep brain death, the cost of maintaining life is actually very large, no economic strength is not good, no professional equipment is not good, of course, professional equipment hospitals have, economic strength you have to have yourself, in fact, there are many miracles of brain dead vegetative state awakening in history, so there is actually a reason not to identify brain death as a real death, it is the last chance for life.

Because even if you are brain dead, but the body is still alive, as long as the heart is beating, you can't give up, unless the heart also stops beating and there is no help at all, you will give up the rescue.

The brain is the chief conductor of the body's systems, like the power supply. If the host is broken, the computer may turn on, with a blue screen or not working, but it will be different if the power is unplugged.

Because only the vital signs of a person whose heart is dead cease to move, death is declared.

Because the heart dies after the brain dies.

Hello: Brain death refers to the criterion for declaring death based on the permanent loss of function of the central nervous system in the brainstem or above the brainstem as a frame of reference. Brain death is different from "vegetative", "vegetative" brainstem function is normal, coma is only due to severe damage to the cerebral cortex or in a state of sudden inhibition, the patient can have spontaneous breathing, heartbeat and brainstem response, while brain death has no spontaneous breathing, is permanent and irreversible.

In the past, many countries have used "cardiac arrest", "absent breathing" and "zero blood pressure" as the criteria for death. However, with the development of medical technology, patients' vital signs such as heartbeat, breathing, and blood pressure can be reversed or maintained for a long time through a series of drugs and advanced equipment. However, if the brainstem is structurally damaged and destroyed, no matter what medical treatment is used, it will eventually lead to cardiac death.

Therefore, compared with cardiac death, brain death appears to be more scientific and the criteria are more reliable.

Brain death is the complete loss of brain function in a person and there is no way to do it, the person is unconscious, and there is no breathing of their own. Without a ventilator to maintain breathing, the heart will stop beating within a few minutes, and people will die, and 97% of patients will die within a week due to cardiac arrest if they are on ventilator maintenance. Cardiac death means that the person's heart completely stops beating, all tissues and organs in the body stop working, and the person dies completely.

Brain-dead patients have no treatment value, no matter how they are treated, they do not have to waste manpower, material resources, and financial resources to rescue, but before the heart stops, they can donate organs to other patients in need to benefit others, which has good social value. Patients who die of a heart have their heartbeat stopped, blood circulation throughout their body is interrupted, and they are unable to donate organs to those in need.

Brain death, of course, and heart death causes a lack of oxygen in the brain, followed by brain death. Brain death is the cessation of the heart, pulse, breathing, and cranial nerves. Thus he was declared dead

Diagnostic criteria for brain death.

1.Standards of international organizations.

The International Committee of Medical Science Organizations, established by the World Health Organization, sets the criteria for death as:

1. Lose all response to the environment;

2. No reflexes and muscle tone at all;

3. Stop spontaneous breathing;

4. Steep drop in arterial pressure;

5. The EEG is straight.

Its basic content is the Harvard standard.

2.Chinese standards.

Brain death is an irreversible state of loss of function of the entire brain, including the brainstem.

Prerequisites include: clear cause of coma, exclusion of reversible coma of various causes.

Diagnostic criteria: deep coma, complete loss of brainstem reflexes, no spontaneous breathing. All of the above must be present.

In the confirmatory test, the EEG was straight, the transcranial Doppler ultrasound showed a pattern of brain death, and the waveform of somatosensory evoked potentials above p14 disappeared. Must be positive in one of these three items.

3.Criteria for brain death in children.

1. Coma and respiratory arrest at the same time;

2. The brainstem reflex is all gone, the pupils are dilated and fixed, the eyes are fixed, and the respiratory activity is completely stopped;

3. The above inspection results are constant and unchanged.

2. Clinical significance of brain death.

1. For patients who have been diagnosed with brain death and maintain blood circulation for a certain period of time with the help of artificial respirators, it is undoubtedly a good way to lift the arch and transplant organs. In Austria, Switzerland, Poland and other countries, laws stipulate that once a patient is diagnosed with brain death, his or her organs can be taken for transplantation.

2. For some patients with cardiac arrest, if the brain is not dead, they should be actively resuscitated and rescued. The suspension of rescue for those who have been judged to be brain dead is both ethically and scientifically reasonable.

3. Doctors were able to accurately determine the time of death. It is also helpful to resolve some legal issues that may be involved (e.g. insurance business, property inheritance, etc.).

1.International standards of judgment.

In 1968, the Ad Hoc Committee of Harvard Medical School reinterpreted the concept of brain death and formulated the first criteria for determining brain death: irreversible deep coma; no spontaneous breathing; absent brainstem reflexes; Loss of electrical activity in the brain (electrorest). Anyone who meets the above criteria and repeats the test within 24-72 hours with no change in the result can be declared dead.

2.At present, China's laws do not clearly stipulate the criteria for determining death. In the eyes of the medical community, brain death is the most scientific criterion for determining death.

So, what is brain death? It refers to the complete, permanent cessation of the function of both hemispheres of the brain and the brainstem. In 2003, China has formulated the criteria for determining "brain death".

1. Irreversible coma and cerebral non-responsiveness.

2. Brain waves disappear.

3. Respiratory arrest, and spontaneous breathing cannot be resumed after more than 15 minutes of artificial respiration.

4. Cranial nerve reflexes (such as pupillary reflex, corneal reflex, swallowing reflex, etc.) are absent, but spinal cord reflexes may exist.

5. The pupils are dilated and fixed.

6. Complete cessation of cerebral circulation (shown by cerebral angiography); Body temperature above 35; No history of drug or poison poisoning (such as overdose of sleeping sedatives, etc.).

This criterion tells us that the verdict of brain death must be very cautious, and it is usually necessary to repeat the examination 2-3 times within 24 hours before the final confirmation is made.

Brain death refers to the irreversible loss of all brain functions, including the brainstem. Brain death should be prerequisites for diagnosis, and then it will be verified by clinical judgment and confirmatory testing. The first diagnosis of brain death does not consider the patient to be dead, and it should be done 12 hours after the first diagnosis, and 24 hours after the first diagnosis for children and infants.

Both judgments considered that the criterion was brain death, and only then was the patient considered to be brain dead.

Whole-brain function, including brainstem function, is irreversibly terminated.

Brain death, also known as hypercoma, is caused by irreversible lesions of the cerebral hemispheres and brainstem, resulting in the termination of basic life functions. The patient had autopnea, circulatory failure, hypothermia, decreased muscle tone, ocular fixation, mydriasis, loss of light reflexes and brainstem reflexes, and was in a near-death state, requiring assisted breathing and medication to maintain respiratory and circulatory function.

With great ambitions, he has ever heard that "the green mountains left are not afraid of no firewood", maybe he thought about it, but he couldn't let go, between life and death, he chose to die. He didn't have the courage to face his own failures. A reason that is not a reason comes out of his mouth.

"He has no shame to see his own failure." Excessive demands led him to the abyss from which he could never recover. I can't stand up again.

1. Death is a natural phenomenon, that is, living things lose their lives, and it is the inevitable destination for the development of all living organisms. With the development of medical technology, patients' vital signs such as heartbeat, breathing, and blood pressure can be reversed or maintained for a long time through a series of drugs and advanced equipment. Whereas, brain death is the irreversible termination of whole brain function, including brainstem function.

2. The respiratory center of the human body is located in the brainstem, and if the brainstem is structurally damaged, it will directly lead to the cessation of respiratory function, and no matter what medical means are taken, the patient's life cannot be saved.

3. Therefore, compared with cardiac death, brain death appears to be more scientific, and the standards are more reliable and standardized.

Brain death is absolutely irrevitable, heart death is to stop beating, and there is hope for salvation through some rescue measures.

Death refers to the physical and actual death of the human body, which is the loss of function of internal organs.

Brain death is when the brain loses all the ability to judge behavior, which is what we commonly call a vegetative state.

In our country, the death criterion is now based on the loss of the ability of the heart to beat.