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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 ["A","C"]

Explanation

Choice A rationale

The use of silicone-based vaginal lubricants is recommended for clients with Sjögren’s syndrome to alleviate vaginal dryness and discomfort during intercourse.

Choice B rationale

Using dehumidifiers in the home is not recommended for clients with Sjögren’s syndrome, as it can exacerbate dryness in the eyes, mouth, and other mucous membranes.

Choice C rationale

The use of artificial tears is essential for clients with Sjögren’s syndrome to relieve dry eyes and prevent complications such as corneal ulcers.

Choice D rationale

The use of contact lenses is not recommended for clients with Sjögren’s syndrome, as it can further irritate dry eyes and increase the risk of eye infections.

Correct Answer is C

Explanation

Choice A rationale

Headaches and blurred vision are not specific to stage I Lyme disease. These symptoms can occur in many other conditions and are not the primary indicators of early Lyme disease.

Choice B rationale

Tremors and weakness are not typical early signs of Lyme disease. These symptoms are more associated with neurological involvement, which occurs in later stages of the disease.

Choice C rationale

Rash symptoms, specifically erythema migrans (a bull’s-eye rash), are the hallmark of stage I Lyme disease. This rash appears at the site of the tick bite and is a key diagnostic feature.

Choice D rationale

Painful joints are more commonly seen in later stages of Lyme disease when the infection has spread and caused more systemic involvement.

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