ATI nurs 180 Pharmacology Final Exam | Nurselytic

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ATI nurs 180 Pharmacology Final Exam Questions

Extract:


Question 1 of 5

A client frequently takes diphenhydramine (Benadryl) to alleviate his upper respiratory symptoms associated with allergies. Which of the following mechanisms of action applies to diphenhydramine (Benadryl)?

Correct Answer: A

Rationale:
Correct Answer: A


Rationale:
1. Diphenhydramine is a first-generation antihistamine that works by blocking the effects of histamine.
2. Histamine exerts its actions by binding to H1 receptor sites, leading to allergic symptoms.
3. By occupying and competing with H1 receptor sites, diphenhydramine prevents histamine from binding.
4. This blockade of H1 receptors reduces allergic symptoms such as sneezing, itching, and runny nose.

Summary:
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Choice B is incorrect as diphenhydramine targets H1, not H2 receptors.
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Choice C is incorrect as diphenhydramine does not stimulate but rather blocks histamine effects.
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Choice D is incorrect as stimulating all H receptor sites would exacerbate allergic symptoms.
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Choices E, F, G are not applicable and do not relate to diphenhydramine's mechanism of action.

Question 2 of 5

Correct Answer:

Rationale:

Question 3 of 5

Correct Answer:

Rationale:

Question 4 of 5

Correct Answer:

Rationale:

Question 5 of 5

Correct Answer:

Rationale:

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