Final answer:
If alone, get an AED before starting CPR; if not alone, have someone else fetch the AED and begin CPR immediately. CPR is recommended before AED use, which is vital in a cardiac emergency.
Step-by-step explanation:
If you are alone with no help, leave the victim to retrieve the AED and get the AED before beginning CPR. Use the AED as soon as it is available. If you are not alone, send someone to get the AED and begin CPR immediately. Use the AED as soon as it is available.
Automated external defibrillators (AEDs) are crucial in the first few minutes of a cardiac emergency and can be found in many public places. They are designed to be used by laypersons and provide verbal instructions for use. AEDs diagnose the heart's condition and automatically apply the shock with appropriate energy and waveform. Although commonly found on ambulances, AEDs are also available in public venues. Performing CPR is recommended before using an AED when possible, as it can sustain vital blood flow to the heart and brain until the AED can be administered.