The progression in the technology and mechanism of external chest compression

Background Cardiac chest compression technique exist for 50 years.It saves many person's lives who suffered cardiac arrest,and this technique was improved again and again in these years,however manual chest compression,still has its limitations.Therefore,many scholars invented various mechanical devices to replace the manual cardiopulmonary resuscitation (CPR).The mechanism of chest compression is constantly updating and improving in further study. Objective To discuss the latest technology and mechanisms of external chest compression. Content This article will review the history,technique,device,and mechanism of the external chest compression. Trend There are still not evidences to prove that using device can improve outcomes than the standard style,so we still have a lot of works to do in this area. Key words: Aardiopulmonary resuscitation; Manual chest compression; Mechanical external chest compression; History; Mechanism