What is the first action to take immediately after an AED delivers a shock?

After an AED delivers a shock, the immediate action to take is to resume chest compressions. This is critical because chest compressions help maintain circulation to vital organs during cardiac arrest. The AED's shock is intended to restore a normal heart rhythm, but until the heart starts beating effectively again, compressions are essential to provide blood flow.

Resuming chest compressions right after the shock allows for continuous support to the patient’s circulation and increases the chances of survival. The AED will typically advise when to check for a pulse or when to allow for more interventions, but the priority is always to continue effective chest compressions to ensure oxygenated blood reaches the brain and other crucial organs.