If the patient is not put on a ventilator in time to help the patient breathe, the patient’s heart will stop beating completely within a few minutes, and the heartbeat and breathing will be gone, and the organs in the body will not be able to live. In other words, if a ventilator is not used after brain death, the organs can only live for a few minutes. If the patient is put on a ventilator in time after brain death to maintain the patient’s breathing, the heart will beat again for a while and the organs in the body will live for a while. Statistics show that about 97% of brain-dead patients’ hearts will stop beating within a week with the adequate help of a ventilator. Similarly, even with the help of a ventilator, the vast majority of brain-dead patients’ organs do not live more than a week, and only a very small percentage survive beyond that.