What action should be taken after delivering a shock with an AED?

After delivering a shock with an AED, it is crucial to start CPR immediately. This is because the shock administered by the AED is intended to restart the heart into a normal rhythm, but may not be sufficient on its own to ensure circulation or oxygenation of vital organs. Performing CPR provides ongoing chest compressions, which helps to maintain blood flow to the brain and other vital organs, extending the chance of survival until advanced medical help arrives.

In situations where an AED is used, the heart might not be in a rhythm that supports effective pumping; thus, initiating CPR right after a shock is essential for maintaining the victim's chances of recovering. This action ensures that blood flow continues, keeping the body’s tissues supplied with oxygen while additional defibrillation attempts or advanced care is provided.