Can cardiac arrest be cured?

Whether the cognitive impairment of cardiac arrest can be cured should be analyzed as appropriate:

if the duration of cardiac arrest is short, temporary hypoxia of the brain due to inability of blood to be effectively pumped to various tissues and organs of the body, mild cognitive impairment, and immediate cardiopulmonary resuscitation, electrical defibrillation, rapid recovery of cardiac function, oxygen supply to the brain and reduction of brain damage are possible to cure. If cardiac arrest occurs for a long time, and blood circulation and oxygen supply are not restored, the brain continues to lack oxygen, causing brain cell death, brain function cannot be fully restored, and cognitive impairment generally cannot be cured.