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What is the purpose of administering diphenhydramine before a blood transfusion?

A.

To expand the blood volume.

B.

To enhance clotting factors.

C.

To avoid fever and chills.

D.

To prevent urticaria.

Answer and Explanation

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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View Related questions

Correct Answer is D

Explanation

Choice A rationale

Speaking loudly and into the client’s good ear is not recommended. Loud speech can be distorted and uncomfortable for individuals with presbycusis.

Choice B rationale

Using sign language is not necessary unless the client is proficient in it. Most clients with presbycusis benefit more from clear verbal communication.

Choice C rationale

Sitting by the client’s side and speaking very slowly is not as effective as speaking directly to the client in a normal, clear voice.

Choice D rationale

Speaking directly to the client in a normal, clear voice is recommended. This ensures that the client can read lips and understand the conversation better.

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.

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