Final answer:
A Certified Patient Care Technician should call for medical assistance and provide basic first aid while monitoring the visitor with signs of respiratory distress, which could indicate a severe allergic reaction.
Step-by-step explanation:
Action for a Visitor in Respiratory Distress
If a Certified Patient Care Technician (CPCT) encounters a visitor in the cafeteria showing signs of respiratory distress, such as swollen lips and tongue, immediate action is critical. The CPCT should follow emergency protocols which often include calling for medical assistance (e.g., activating the emergency response system) and staying with the person to monitor their condition. While awaiting the arrival of medical professionals, the CPCT might be required to assist with basic first aid measures, especially if they are trained in CPR or basic life support. It is important to note that the symptoms described could be indicative of a severe allergic reaction (anaphylaxis), and rapid response could be life-saving.