Final answer:
CPR, cardiopulmonary resuscitation, involves breathing and chest compressions primarily, aimed at maintaining blood flow to important organs until professional help arrives. AEDs, Automated External Defibrillators, are devices used to deliver a shock to the heart in the event of arrhythmias.
Step-by-step explanation:
Cardiopulmonary resuscitation, known commonly as CPR, is a first aid technique used during emergencies like cardiac arrest. The method consists primarily of breathing and chest compressions. The focus is on high-quality chest compressions, rather than providing artificial respiration. Chest compressions help manually compress the blood within the heart to push some of the blood within it into the pulmonary and systemic circuits, ensuring enough supply to vital organs like the brain.
An additional lifesaving device often used in cardiac emergencies is the Automated External Defibrillator (AED). An AED delivers a large charge in a short burst to a person's chest, correcting abnormal heart rhythms or arrhythmias. This shock can help terminate any arrhythmia and allow the body's natural pacemaker to resume its normal rhythm. These devices are common in public places and are designed for use by both medical and non-medical personal.
Learn more about CPR and AED