What is the initial step when using a defibrillator?

When using a defibrillator, the initial step is to turn on the device and follow its instructions. This is crucial because modern defibrillators, especially automated external defibrillators (AEDs), are designed to guide the user through the process with clear audible and visual prompts. Turning it on activates the internal checks and prepares the defibrillator to assess the patient's heart rhythm.

After the device is on, it will instruct the responder to place the pads correctly on the patient's chest and may even prompt for rhythm analysis. These steps are essential to ensure that the defibrillator can effectively assess whether a shock is needed while minimizing the risk of further harm to the patient.

In contrast, other actions such as checking for a pulse, starting chest compressions, or attaching pads to the arm do not align with the critical initial protocol that prioritizes activating the defibrillator. Checking for a pulse may delay the use of the device when time is of the essence. Chest compressions, while important in a cardiac arrest situation, should not be started until the defibrillator is ready to assist with the emergency response. Therefore, following the defibrillator's instructions right from the beginning is the most effective way to ensure the best chance of survival for