On October 15, 2015, the new edition of the American Heart Association CPR and ECC Guidelines made its grand entrance. After 5 years, what parts of the guidelines will the AHA change? Are there any disruptive ideas? Next, for you to analyze: 1, rapid response, teamwork. Rescuers should perform several steps simultaneously, such as checking breathing and pulse at the same time, to shorten the time to start first compressions. Form an integrated team by multiple rescuers to complete multiple steps and assessments at the same time (respectively, the rescuer implements the emergency response system; chest compressions, performs ventilation or obtains a balloon mask for artificial respiration, and retrieves a disease-setting defibrillator at the same time). 2.Survival chain “divided into two AHA adult survival chain is divided into two chains: one chain for the in-hospital emergency system and the other chain for the out-of-hospital emergency system. In the era of cell phones, make full use of social media to call the rescuer, and modern electronic devices such as cell phones can play an important role in out-of-hospital first aid. In-hospital EMS should implement CPR as a team: early warning system, rapid response team (RRT) and emergency medical team system (MET). 3. First shock OR first compressions. In the 10-year guideline, when the AED is ready, CPR should be performed for 1,5-3 minutes, followed by defibrillation. The latest version suggests that when the rescuer can immediately obtain an AED, the defibrillator should be used as soon as possible for adult cardiac arrest patients; if an AED is not immediately available, CPR should be started when others go to obtain and transform the AED, and defibrillation should be attempted as soon as possible after the equipment is provided. 4, stop “blind” to make the effort! The 10-year guidelines specify the lower limit of chest compressions: frequency ≥ 100 times/min and depth ≥ 5 cm. The problem of excessive compressions, such as sternal and rib fractures, is common in clinical practice, and the rescuer will also consume a lot of energy to ensure the quality of subsequent compressions. The new guidelines propose high quality CPR, which should have adequate rate and amplitude of compressions: compression rate of 100-120 compressions/min; amplitude of at least 5 cm and no more than 6 cm. 5. A boon for addicts. If the patient has a suspected life-threatening, or opioid-related emergency, naloxone should be administered. A boon for addicts! For patients with known or suspected opioid addiction, if unresponsive and breathing normally, but with a pulse, naloxone can be given intramuscularly or intranasally by properly trained lay rescuers and BLS rescuers. 6. Chest compressions should be “effective”. The chest is fully rebounded after each compression, and the rescuer must avoid leaning on the patient’s chest between compressions; to improve the efficiency of compressions, it is necessary to reduce interruptions in compressions, and the updated guidelines suggest that the target proportion of chest compressions in overall CPR should be at least 60%. 7, pressin was “delisted. The 10 year old guideline considers one dose of intravenous/intraosseous push of 40 units of pressin as a substitute for the first or second dose of epinephrine for cardiac arrest. The new version, however, states that the combined use of pressin and epinephrine has no advantage over the use of standard doses of epinephrine in the treatment of cardiac arrest. There is also no advantage to administering pressor versus epinephrine, and therefore pressor has been “delisted” from the new edition of the guidelines. The C-A-B order of administration is reiterated. The latest guideline reiterates that the 10-year version of the guideline should be followed, i.e., the order of administration for a single rescuer: chest compressions should be started before artificial respiration (C-A-B), reducing the delay to the first compression; 30 chest compressions followed by 2 human