<unk>  refers to the treatments and techniques performed in an emergency in order to support<unk>  after the failure of one or more vital organs. Healthcare providers and emergency medical technicians are generally certified to perform basic and advanced<unk>  procedures; however, basic<unk>  is sometimes provided at the scene of an emergency by family members or bystanders before emergency services arrive. In the case of cardiac injuries, cardiopulmonary resuscitation is initiated by bystanders or family members 25% of the time. Basic<unk>  techniques, such as performing CPR on a victim of cardiac arrest, can double or even triple that patient's chance of survival. Other types of basic<unk>  include relief from choking (which can be done by using the Heimlich maneuver), staunching of bleeding by direct compression and elevation above the heart (and if necessary, pressure on arterial pressure points and the use of a manufactured or improvised tourniquet), first aid, and the use of an automated external defibrillator. The purpose of basic<unk>  (abbreviated BLS) is to save lives in a variety of different situations that require immediate attention. These situations can include, but are not limited to, cardiac arrest, stroke, drowning, choking, accidental injuries, violence, severe allergic reactions, burns, hypothermia, birth complications, drug addiction, and alcohol intoxication. The most common emergency that requires BLS is cerebral hypoxia, a shortage of oxygen to the brain due to heart or respiratory failure. A victim of cerebral hypoxia may die within 8–10 minutes without basic<unk>  procedures. BLS is the lowest level of emergency care, followed by advanced<unk>  and critical care.
Life support
Advanced trauma life support
Clap for Our Carers
Barrier nursing
Basic life support
First aid
Hospice
Deathcare