CPR and AED awareness week aims to educate the public about performing CPR and using AEDs during cardiac emergencies. CPR involves chest compressions and rescue breathing to manually pump the heart and provide oxygen to the brain until emergency services arrive. An AED analyzes heart rhythm and delivers shocks to restore a normal rhythm if needed. It is crucial that bystanders are trained in CPR and AED use, as the chances of survival after cardiac arrest decrease by 10% every minute without CPR.