What is the purpose of using an Automated External Defibrillator (AED)?

The primary purpose of using an Automated External Defibrillator (AED) is to restore normal heart rhythm during a cardiac arrest. When a person experiences sudden cardiac arrest, their heart may go into a chaotic rhythm known as ventricular fibrillation or another arrhythmic condition. An AED is designed to analyze the heart's rhythms and, if necessary, deliver a shock to the heart to reset it, allowing it to return to a normal rhythm. This can significantly increase the chances of survival for someone experiencing cardiac arrest if used quickly and effectively.

Other options, such as treating allergic reactions, administering medication intramuscularly, or providing supplemental oxygen, do not pertain to the function of an AED. Instead, they involve different medical interventions that are not aimed at correcting cardiac electrical activity. Thus, the role of an AED is specific and vital in cases of cardiac emergencies.