Final answer:
You should continue CPR and transport the patient at once when an AED has been used three times with no shock advised, as the patient may still benefit from advanced medical care. So the correct option is D.
Step-by-step explanation:
If you are using an AED (Automated External Defibrillator) on a cardiac arrest patient and after three analysis cycles with the device no shock is advised, you should not remove the AED or stop resuscitation efforts. Instead, you should continue CPR and plan to transport the patient immediately. AEDs are designed to analyze the patient's heart rhythm and deliver a shock if necessary. If an AED repeatedly advises no shock, it suggests that the patient does not have a shockable rhythm, but CPR should be continued to provide circulatory and respiratory support until advanced medical care can be provided. Therefore, the appropriate response to the question is to continue CPR and transport the patient at once, because early advanced care can significantly affect the outcome. In the real-world setting, coordination with emergency medical services or a similar authority should also be done immediately if not already in place.