Final answer:
In a medical emergency with two critical patients, one with crushing chest pain and another with a stroke, the best course of action is to call for assistance, as both require immediate medical attention.
Step-by-step explanation:
If you are presented with a situation where a patient is having crushing chest pain and another patient is having a stroke, the appropriate action is to call for assistance from another nurse (option c). Both conditions are medical emergencies and require immediate attention. As a healthcare provider, you should activate the emergency response system in your facility and follow established triage protocols. The FAST mnemonic aids in recognizing stroke symptoms, guiding expedited assistance for stroke victims, but it does not replace the need for immediate medical response for all serious conditions, such as severe chest pain that could indicate a heart attack.