What are common signs of anaphylaxis that a nurse should monitor?

In the context of monitoring for anaphylaxis, the correct choice focuses on critical and immediate symptoms that indicate a severe allergic reaction. Anaphylaxis is a life-threatening condition that requires prompt recognition and intervention. Common signs include difficulty breathing, which may manifest as wheezing or stridor due to airway constriction; swelling of the face, throat, or tongue, which can obstruct the airway; and a rapid drop in blood pressure, which can lead to shock. These symptoms are life-threatening and require immediate medical attention, making this option essential for nurses to monitor.

The other options describe symptoms that are either not specific to anaphylaxis or indicate less severe health issues. Fever and chills could suggest infection, nausea and vomiting could be associated with a variety of gastrointestinal conditions, and headache and fatigue are common symptoms linked to many non-emergency situations. Thus, they do not align with the critical nature of anaphylactic responses that nurses must be vigilant about.