Final answer:
Immediately after an AED delivers a shock, you should resume CPR starting with chest compressions, following the standard 30:2 compression-to-breath ratio until professional medical assistance arrives or the individual shows signs of recovery.
Step-by-step explanation:
When providing CPR to a child or adult, if an AED becomes available and a shock is indicated and administered, the correct action to take next is to immediately restart CPR, starting with compressions. You should not administer more shocks immediately or check the carotid pulse right away; the AED will prompt you if another shock is needed after the next cycle of CPR is completed.
After an AED delivers a shock, recommence CPR beginning with chest compressions, and follow the 30:2 ratio (30 compressions to 2 breaths) for all age groups. Continue providing CPR until the person regains consciousness or emergency medical services take over. It is important to minimize interruptions in chest compressions to maintain blood flow.