Final answer:
The statement 'I am itching all over' requires immediate attention as it could indicate an allergic reaction to the prescribed penicillin. the correct answer is A.
Step-by-step explanation:
When administering an intravenous piggyback infusion of penicillin, the client statement that would require the nurse's immediate attention is: "I am itching all over." This could indicate a potential allergic reaction to the antibiotic, which can escalate to a more severe reaction known as anaphylaxis. Immediate action is required to ensure the safety and well-being of the client. Though statements A, C, and D also report discomfort, they are less likely to be indicative of an emergency allergic reaction.
Itching, also known as pruritus, is a common symptom associated with allergic reactions to medications. An allergic reaction to penicillin can occur at any time, even if the client has previously tolerated penicillin without any adverse effects. It is important for a nurse to monitor for signs of an allergic reaction, such as hives, itching, or difficulty breathing, as they can rapidly progress to anaphylaxis, a life-threatening condition requiring immediate medical intervention.