What should be done after the shock is delivered by the defibrillator?

After delivering a shock with a defibrillator, the appropriate action is to continue with CPR until there are signs of life from the patient. This is essential because the purpose of defibrillation is to restore a normal heart rhythm, but it may not be successful on the first attempt. Continuing CPR helps maintain blood flow to vital organs, increasing the chances of survival and recovery.

Providing effective chest compressions during CPR also keeps oxygenated blood circulating, which is crucial for brain function and other vital organs. CPR should be performed for about two minutes after defibrillation before reassessing the patient's condition or considering additional shocks.

The other options do not prioritize necessary life-saving actions. Checking for signs of improved blood pressure immediately after a shock may not provide an immediate and thorough assessment of the patient’s condition. Repeating defibrillation right away may not allow enough time for CPR to be effective between shocks. Additionally, waiting for medical personnel to arrive without performing CPR could lead to deterioration in the patient's condition.