After the first responder arrives at the scene, he/she should be evaluated according to D.R.A.B.C for the wounded and sick:
Ensuring Environmental Safety—Observate and assess whether the site environment poses a hazard to the rescuer or the injured. If any, remove all risk factors first. If the risk factor cannot be removed in a short period of time (such as a fire), Consider moving the injured person away from the scene. Unless you do not move the injured person will cause greater danger or even life-threatening, do not move the injured person as much as possible.
Check the awake and reaction level of the injured person - call the injured person's ears and gently shake the shoulders for five to ten seconds to test the reaction of the injured person. If there is no response, you should seek help from others.
Unobstructed airway - the airway is swayed by the amount of the forehead, that is, one hand presses the forehead of the injured person, and the other hand holds the injured tibia to the forehead, in order to keep the airway open and watch the wounded person's mouth No foreign matter, if there is foreign matter, it should be removed immediately. If you suspect that the injured person's head or neck is injured, you should use the traumatic method to open the airway to avoid injury to the spine or spinal cord.
Check your breathing and check your pulse and circulation signs - put your face close to the mouth and nose of the injured person, feel your own feelings and listen to the injured person's breathing, pay attention to whether the injured person's chest is ups and downs, and check the carotid artery. The first aid responder should take the index finger and middle finger from the wound. The nucleus of the throat slides about 2.5 cm in its direction. Checking for breathing and pulse should be completed within ten seconds.
If the injured person has no breathing and pulse, the other person should immediately report to the alarm and extract the automatic external defibrillator, and immediately perform the cardiopulmonary resuscitation procedure.
If the injured person recovers the pulse and breath but is not awake, the injured person should be placed in the recovery horizontal position (the injured person should be lying on his side, the head should be tilted back to keep the airway open, and the hand pad far away from the ground will be under the cheek. The hip and knee joints of the far legs are placed at right angles, fixed position, and the pulse and breathing are taken care of. If the injured person wakes up, they should deal with other injuries, such as fractures and bleeding. In any case, first responders should stay on site to assist the injured until the ambulance arrives.
Some countries, such as the United States, encourage citizens to take extra-cardiac pressure for patients with or without CPR, but it is still recommended that they have been admitted to a recognized first-aid certificate. Others who are not sure about the injured are not. Cardiopulmonary resuscitation should be performed on the injured person and immediately call for help or call for help; if the injured person is awake, comfort will be provided to stabilize the emotional situation of the injured person.
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