At present, the legal death standard implemented in China is

First, China's criteria for judging death.

The standard of death is brain death. In China, "breathing, heart and pulse all stop, and pupil dilation is the standard of natural death of natural persons". Modern medicine believes that the primary physiological feature representing human life is respiratory function, and the central nervous system that dominates respiratory function is located in the brain stem. Therefore, it is suggested that respiratory arrest should reach the critical point of death based on brain stem death, which can be maintained by ventilator; Cardiac arrest, and pacemakers. But the brain is dead and irreversible. It is an objective brain stem death. The heart can continue to beat, breathing can be maintained, and brain death is the real death. Data at home and abroad show that none of the patients diagnosed with brain death can live for a week. Vegetative brains exist, they can eat and swallow, and their breathing and heartbeat are normal. If they don't breathe spontaneously, they are brain dead. "

Second, how is brain death judged?

(1) Preconditions:

(1) The cause of coma is clear;

(2) Eliminate reversible coma caused by various reasons.

(2) Clinical judgment:

(1) deep coma;

(2) The brainstem reflex disappeared completely;

(3) No spontaneous breathing (maintained by ventilator, confirmed by spontaneous breathing induction test).

The above three items must be met.

(3) Confirmation test:

(1) EEG showed electrical rest;

(2) Transcranial Doppler showed no cerebral blood perfusion;

(3) The waveform above somatosensory evoked potential 14 disappears.

At least one of the above three items is positive. Fourthly, after the initial judgment of the observation time of brain death, it can be finally judged as brain death if there is no change in observation 12 hours.

3. What is the difference between brain death and traditional diagnostic criteria for death?

Taking brain death as the standard of overall death means that even if the heartbeat still exists, individual life death can still be judged in medicine because brain death is irreversible.

Compared with the standard of brain death, the traditional standard of death is heartbeat and respiratory arrest, and people pay more attention to human biology, so it is easy to accept. However, cardiopulmonary death will not cause rapid death of brain, kidney, liver and other tissues and organs, especially artificial organ transplantation technology and substitution technology, which can also save patients with cardiopulmonary death.

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