Ventricular fibrillation, referred to as ventricular fibrillation, is a series of extremely rapid and ineffective fatal and irregular ventricular contractions, which belong to arrhythmia. At this point, even if the heart doesn't stop beating completely, it loses its ability to pump blood effectively. Within a few seconds, the patient will lose consciousness because of insufficient blood supply to the brain. If it is not treated in time, it will cause irreversible damage to brain tissue due to hypoxia for more than 5 minutes, and then it will die soon. AED can apply intensive current in a very short time, and stimulate the heart by electric shock, so as to restore its state to normal beating state, which is called defibrillation. What if someone around me has a cardiac arrest? Three steps to save lives. Assess site environmental safety. Ensure that the rescuer and the rescued person will not suffer secondary injuries due to environmental factors. Then pat the patient on the shoulder, call the patient loudly in his ears to judge whether the patient is conscious or not, and judge whether he is breathing by observing whether the patient's chest is ups and downs. The judgment time is within 10 second. If the injured person is found unconscious and breathing, first aid should be given immediately. Call people around you to call 120 emergency number, identify yourself and instruct people around you to help get AED.
Before the arrival of AED, the patient should be given cardiopulmonary resuscitation. First, put the patient in a resuscitation position and lie flat on a solid plane. The rescuer placed one palm root at the midpoint of the connecting line between the two nipples on the patient's chest, and the other hand overlapped with it. Interlock fingers with both hands, with the pressing depth of 5 ~ 6 cm and the pressing frequency of 100 ~ 120 times per minute. Note: Every press should make the patient's chest rebound to the normal position. After pressing for 30 times, lift the forehead to open the airway, and give the patient mouth-to-mouth artificial respiration twice, each blowing 1 second. If the patient has a foreign body in his mouth, he must take it out. In the process of cardiopulmonary resuscitation, every time you press 30 times and blow twice, it is 1 cycle. After 5 cycles, it takes 8 seconds to check whether the carotid artery beats again. If the pulse does not recover, continue to press until the AED or emergency personnel arrive.
After you get the AED, turn on the AED immediately and follow the voice prompts. Take the electrode pads out of the package and stick them on the upper right and upper left of the patient's chest according to the instructions, and then check whether the electrode pads are properly connected to the defibrillator. After the electrode pads are connected, the machine will be prompted to analyze the heart rhythm. Note: During the analysis of heart rhythm, you should warn anyone around you not to touch or approach the patient. After the analysis, the AED will make a suggestion on whether to perform defibrillation. When there is a defibrillation instruction, don't contact with the patient, and tell anyone nearby to stay away from the patient and press it by the operator? Discharge? Key defibrillation. If defibrillation is unsuccessful, continue to perform chest compressions for 5 cycles, then perform AED operation according to voice prompts, and so on until the ambulance arrives. If defibrillation is successful and the patient's heart starts to beat again, you can put the patient in a stable lateral position, closely observe the patient and wait for the ambulance to arrive. In order to facilitate memory, it can also be simplified into three steps: 1, quickly dial 120, and ask people around you to help bring nearby and; 2, before the arrival of the AED, do not interrupt the heart compression; 3. After the AED arrives, use the AED according to the voice prompt.