Recent analysis of 67 studies shows that the treatment rate and survival discharge rate of out-of-hospital cardiac arrest (OHCA) vary greatly in different regions of the world. The treatment rate of out-of-hospital cardiac arrest is the highest in North America (54.6%), followed by Oceania (44.0%) and Europe (35.0%), and the lowest in Asia (28.3%). The percentage of ventricular fibrillation (VF) and survival discharge rate were the highest in Oceania (39.8%, 10.7%), followed by Europe (35.2%, 9.4%) and North America (28.1%, 6.3%), and the lowest in Asia (11.2%, 2.2%)[1]； The average survival discharge rate was only 7.8%. High-quality CPR is the cornerstone of successful CPR, and to improve the quality of CPR, the American Heart Association (AHA)[2]And the European Recovery Council (ERC)[3]Recently, the respective 2005 CPR guidelines have been updated, and now the updated part and the differences between the two guidelines are mainly introduced.
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