According to 39 Health Network, sudden death refers to spontaneous and unexpected sudden death. Sudden death caused by cardiovascular diseases is more common, which is called sudden cardiac death. Coronary heart disease and acute myocardial infarction are more common. There are no symptoms before sudden death, some patients have mental stimulation or mood fluctuation before sudden death, and some patients have precordial pain. When you fall to the back of your head and die, your heart loses its effective contraction for 4 to 15 seconds, then you faint and twitch, and your breathing becomes slow and shallow quickly, thus stopping.

Intracranial hemorrhage, serious condition, obvious changes in vital signs, and easy to be accompanied by cardiopulmonary dysfunction, water and electrolyte disorders, especially serious cases accompanied by brain hernia death.