Final answer:
An Automated External Defibrillator (AED) is designed for public use, and does not require a lay person to have advanced training or medical qualifications. These devices provide instructions and are commonly found in public places to assist during cardiac emergencies.
Step-by-step explanation:
An AED is a portable device used in cases of life-threatening cardiac arrhythmias which lead to cardiac arrest. The machine automatically diagnoses the heart rhythm and, if necessary, directs the user to deliver a shock to the heart. These devices are equipped with simple instructions and can guide a lay person through the process effectively.
Their ease of use has prompted the placement of AEDs in many public locations. By providing voice commands, the AED informs the user when to administer a shock and can also instruct when to perform cardiopulmonary resuscitation (CPR). Although CPR is recommended to support the flow of blood and oxygen throughout the body, the AED is crucial for correcting the heart rhythm and has the potential to save lives. Therefore, it is beneficial for as many people as possible to have basic training on how to use an AED, but it is not required for operation.