CPR is an important part of the chain of survival for cardiac arrest victims and involves providing early access to care, early CPR, early defibrillation, and early advanced care. CPR consists of 30 chest compressions followed by 2 rescue breaths in a 5 cycle sequence until emergency services arrive or the victim recovers. It should be performed with enough depth, at least 5 cm for adults, and stopped when ambulance arrives, the first aider is exhausted, the casualty recovers, or another first aider takes over. An AED can also be used to provide an electric shock to restore a normal heart rhythm in ventricular fibrillation.

1. Lesson 8
CARDIO-PULMONARY RESUSCITATION 心脏复苏术

2. Chain of survival
Early Access
Early CPR
Early Defibrillation
Early Advanced Care

3. CPR的流程
Compression (CPR)
Breathing
Airway
Seek for help
Response
Danger

4. [30 compression : 2 breaths] x 5 cycles
(2 分钟内完成)
Depth of compression 按压的深度
at least 2 inches (5 cm)
The hand
Adult---two hand
Children----one hand
Infant-----two finger

5. When to stop CPR?
Arrival of ambulance
First aider exhausted 累
Casualty recover
Another first aider take over
When you have AED

6. A.E.D 体外自动除颤器
Automated
External
Defibrillator

7. The common of sudden death
Ventricular fibrillation
（心室纤维性颤抖）
Accidental electric shock
Drowning
Drug overdose
Suffocation 窒息
Severe allergic reaction
Trauma精神创伤
Stroke中风