Asphyxial death varies from 1-6 minutes and is generally classified as acute, subacute, and delayed asphyxial death. Asphyxial death is usually divided into 5-6 phases, such as respiratory distress, inspiratory distress, expiratory distress, apnea, terminal respiration, and death, ranging from 0.5-1 minute each. Depending on the patient’s tolerance to hypoxia, the duration of the different periods is not quite the same. The general human brain is able to tolerate 4-6 minutes, as different people can die suddenly in any of the six phases mentioned above, such as a cardiovascular event leading to sudden death of the patient. The degree of asphyxia tolerance varies from patient to patient, and sudden death can generally occur between 1-6 minutes from ischemic-hypoxic asphyxia. After more than 6 minutes, irreversible brain death can occur, resulting in the patient’s death.