People around you faint. This happens from time to time, so more people know how to give first aid when someone faints. Fainting is mostly caused by temporary ischemia of brain tissue caused by circulatory disturbance. It is very important to take some relevant first aid measures. For first aid in this situation, you should first distinguish what kind of cause it belongs to. Different first aid measures should be taken in different situations. Today, the CPR simulator manufacturer will share with you some common misunderstandings in first aid.