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 B
Explanation
Choice A rationale
Avoiding bearing down is important for patients with certain conditions, but not specifically for Ménière’s disease.
Choice B rationale
Patients with Ménière’s disease should avoid sudden movements to prevent exacerbating vertigo and balance issues.
Choice C rationale
Increasing sodium intake can worsen fluid retention and symptoms of Ménière’s disease.
Choice D rationale
Increasing caffeine intake can exacerbate symptoms of Ménière’s disease, including tinnitus and vertigo.
Correct Answer is A
Explanation
Choice A rationale
A phlebotomist who collects blood from clients who have HIV is at the greatest risk for contracting HIV. This is because they are frequently exposed to blood, which is a bodily fluid that can transmit HIV if proper precautions are not taken.
Choice B rationale
A nurse who works for an insurance company and collects urine samples from clients who have HIV is at a lower risk compared to a phlebotomist. Urine is not a common transmission route for HIV.
Choice C rationale
An occupational therapist who works with a client who has HIV is at a lower risk compared to a phlebotomist. Occupational therapists are not typically exposed to blood or other high-risk bodily fluids.
Choice D rationale
A personal trainer who works with a client who has HIV is at a lower risk compared to a phlebotomist. Personal trainers are not typically exposed to blood or other high-risk bodily fluids.
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