Accident~an unfortunate incident that happens unexpectedly and unintentionally, typically resulting in damage or injury.
Breathing~the process of taking air into and expelling it from the lungs.
Choke~(of a person or animal) have severe difficulty in breathing because of a constricted or obstructed throat or a lack of air.
Compressions~the action of compressing or being compressed.
Emergency~a serious, unexpected, and often dangerous situation requiring immediate action.
Faint~(of a sight, smell, or sound) barely perceptible.
First aid~help given to a sick or injured person until full medical treatment is available.
Heartbeat~the pulsation of the heart.
Pulse~a rhythmical throbbing of the arteries as blood is propelled through them, typically as felt in the wrists or neck.