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. .
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Correct Answer is A
Explanation
Choice A rationale
A CD4-T-cell count of 180 cells/mm³ indicates severe immunosuppression in a client with HIV, making them highly susceptible to opportunistic infections. This is a critical value that requires immediate attention to prevent life-threatening complications.
Choice B rationale
A positive Western blot test confirms the presence of HIV antibodies but does not indicate the current immune status or the urgency of the client’s condition.
Choice C rationale
Platelets at 150,000/mm³ are within the normal range and do not indicate an immediate threat to the client’s health.
Choice D rationale
A WBC count of 5,000/mm³ is within the normal range and does not indicate an immediate threat to the client’s health.
Correct Answer is C
Explanation
Choice A rationale
White drainage on the eyelids is not a normal finding and should be reported to the surgeon. However, this is not a standard discharge instruction but rather a sign of potential infection.
Choice B rationale
Sleeping on the abdomen is not recommended after cataract surgery as it can increase pressure on the eye and disrupt healing. Patients are usually advised to sleep on their back or the unaffected side.
Choice C rationale
Avoiding lifting anything heavier than 4.5 kg (10 lb) for 1 week is a standard instruction to prevent increased intraocular pressure and ensure proper healing of the surgical site.
Choice D rationale
Bending at the waist to pick up objects can increase intraocular pressure and should be avoided. Patients are advised to bend at the knees instead.