<unk>  <unk>  is an emergency medical procedure Which can be crucial to save lives.<unk>  is used for victims of cardiac and respiratory arrest.<unk>  can be performed in hospitals by medical team, or in the community by laypersons or emergency response professionals.<unk>  consists of artificial blood circulation and artificial respiration (i.e. chest compression and lung ventilation).<unk>  is generally continued, usually in the presence of advanced life support, until the patient regains a heart beat (called "return of spontaneous circulation" or "ROSC") or is declared dead.<unk>  is unlikely to restart the heart, but rather its purpose is to maintain a flow of oxygenated blood to the brain and the heart, thereby delaying tissue death and extending the brief window of opportunity for a successful<unk>  without permanent brain damage.  Defibrillation and advanced life support are usually needed to restart the heart.
Cardiopulmonary resuscitation
Rapid sequence induction
Defibrillation
Intubation
Artificial respiration
Basic life support
Lethal injection
Intra-aortic balloon pump