Chain of survival was first raised and applied by American heart association （AHA）in 1992,which is used to describe a potential and ordere-d link in rescuing process. The link is a series of work to saving life which is carried out by a team composed with first responder, emerg-ency scheduling personnel, emergency service personnel, doctor and nurses. The earlier and more general the work spread, the highest achievement ratio patients to be rescued is.
The links in the new AHA ECC Adult Chain of Survival are as follows: The importance of post–cardiac arrest care is emphasized by the additi-on of a new fifth link in the Chain of Survival (Fig.).
1.Immediate recognition of cardiac arrest and activation of the emergency response system.
2. Early CPR with an emphasis on chest compressions.
3. Rapid deﬁbrillation.
4. Effective advanced life support.
5. Integrated post–cardiac arrest care.
Fig. 2010 chain of survival