How long can brain death last in icu

Brain death means the loss of consciousness and the loss of whole brain function. In fact, strictly speaking, the person is actually dead, but if the function of other organs is normal, especially the heart function is normal, after respiratory support in the ICU Maintaining oxygen supply throughout the body can often last for a long time. Therefore, it can be seen that patients who are already brain dead can persist for several months or years. However, in fact, the patient in this situation is actually dead according to the new death standard, but due to external intervention to maintain respiratory function, so as to maintain the minimum survival state of tissues other than body and brain tissues, but in biological terms, he has actually died.