Dominate Pharmacology & IV Therapies 2026 – Inject Fun into Your Study Routine!

In the context of a client with a history of pruritic rash during previous transfusions, prescribing diphenhydramine (Benadryl) is a common and appropriate choice. This medication is an antihistamine that is used to alleviate allergic reactions, including pruritus (itching), which may have occurred due to histamine release during prior blood transfusions.

The rationale behind administering diphenhydramine before a transfusion is to prevent or mitigate the reactions that can occur, particularly in individuals who have experienced similar symptoms in the past. By blocking histamine receptors, diphenhydramine can reduce the likelihood of a rash or itching from reoccurring, thereby making the transfusion process safer and more comfortable for the patient.

Other medications listed, such as acetaminophen, corticosteroids, and ibuprofen, do not specifically target the histamine response that leads to pruritus in this context. Acetaminophen is typically used for pain and fever management; corticosteroids can be used for more severe allergic reactions but may not be indicated for mild cases like pruritus; and ibuprofen is an anti-inflammatory and analgesic but does not address the allergic aspect of the symptoms experienced. Thus, diphenhydramine