What is the first action you should take when you have access to an AED?

When using an Automated External Defibrillator (AED), the first action to take is to power it on. This is crucial because powering on the AED initiates its self-assessment protocols and provides voice prompts that guide you through the next steps in the resuscitation process. The device will analyze the patient's heart rhythm and instruct you on whether a shock is advised.

Once the AED is on, it also provides essential information, which can help the responder coordinate their actions effectively with other bystanders or responders, including starting CPR if necessary.

While attaching the pads, calling for emergency services, and beginning CPR are important steps in the chain of survival, they should follow the powering on of the AED to ensure its full functionality in managing the cardiac emergency.