First aid is a race against "death". When there is an acute disease, most people may get panic. It is necessary to learn more about common emergency rescue, to quickly seize the golden time and the opportunity to save lives, and take people back from "death", if someone around you has such a disease one day. The most dangerous acute disease is cardiac arrest of all emergencies. Four minutes after cardiac arrest is the diamond time for rescue. After correct CPR, the survival rate can reach 30-50% in some areas with developed emergency systems. After the 4 minutes, cerebral cortex cells will be irreversibly damaged and died due to hypoxia. After more than 6 minutes, the survival rate will be greatly reduced. After more than 10 minutes, the survival rate will be less than 1%. Therefore, the perfect first-aid time is the 4 minutes. First, you should dial 120 immediately. Second, it is necessary to immediately perform chest compressions and artificial respiration to the patient at the scene to maintain blood supply to important organs such as the heart and brain. NOTE: If mouth-to-mouth resuscitation cannot be carried out to the patient, chest compressions alone are also effective in the early stages.

When there is a foreign body stuck in the throat, the airway will be blocked in some cases. If it is completely blocked, suffocation may occur. If the patient is not rescued in time within a few minutes, it will be life-threatening at any time. The first-aid time for suffocation is 4-10 minutes. When you find someone in this situation, you should call 120 immediately first. Second, you could use the Heimlich maneuver for first aid. You should stand behind the patient, hug the patient's waist, find the 2-finger distance above the patient's navel, make a fist with the right hand, hold the right hand with the left hand aiming at the part, and impact the abdomen from the bottom to the oblique top continuously and rapidly, so that the foreign body will be discharged by the impact of the airflow. Note: No matter whether the foreign body is discharged, the patient should go to the hospital in time.