What is the purpose of administering diphenhydramine before a blood transfusion?
To expand the blood volume.
To enhance clotting factors.
To avoid fever and chills.
To prevent urticaria.
The Correct Answer is D
Choice A rationale
Diphenhydramine does not expand blood volume. It is an antihistamine used to prevent allergic reactions.
Choice B rationale
Diphenhydramine does not enhance clotting factors. It is used to manage allergic reactions.
Choice C rationale
While diphenhydramine can help manage fever and chills, its primary purpose before a blood transfusion is to prevent allergic reactions.
Choice D rationale
Administering diphenhydramine before a blood transfusion helps prevent urticaria and other allergic reactions by blocking histamine release. .
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale
Applying cool compresses can help reduce swelling and discomfort, but it is not the primary instruction for a client scheduled for retinal detachment surgery.
Choice B rationale
Eye drops to constrict the pupils are not typically prescribed for retinal detachment surgery. The focus is on preventing further detachment and ensuring proper healing.
Choice C rationale
Restricting head movement is crucial to prevent further detachment of the retina and to promote proper healing after surgery. The client should be instructed to avoid sudden or excessive head movements.
Choice D rationale
Keeping both eyes patched is not necessary and may cause unnecessary discomfort and disorientation for the client.
Correct Answer is A
Explanation
Choice A rationale
Systemic lupus erythematosus (SLE) is an autoimmune disease that primarily affects connective tissue. The immune system mistakenly attacks healthy tissue, leading to inflammation and damage.
Choice B rationale
SLE does not originate in the peripheral vascular system, although it can cause complications in blood vessels.
Choice C rationale
While the lymphatic system is involved in immune responses, SLE primarily targets connective tissue.
Choice D rationale
SLE does not originate in skeletal tissue, though it can cause joint pain and arthritis.
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