The nurse is administering diphenhydramine (Benedryl), a neuropharmacologic agent that works by doing what?

Preventing mast cells from releasing histamine

Preventing receptor activation by binding to histamine receptors

Prevent axonal conduction

Promote receptor activation to H1 histamine receptors

Answer and Explanation

The Correct Answer is B

Choice A rationale: Diphenhydramine blocks the action of histamine by binding to H1 receptors, rather than preventing its release from mast cells.
Choice B rationale: Diphenhydramine works by blocking the activation of histamine receptors, preventing the effects of histamine.
Choice C rationale: Diphenhydramine is not involved in preventing axonal conduction.
Choice D rationale: Diphenhydramine is an H1 receptor antagonist and does not promote receptor activation.

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Correct Answer is A

Explanation

Choice A rationale: Patient-controlled analgesia (PCA) devices provide a controlled dose of medication when the patient presses the button. However, the onset of action for morphine is typically faster than 10 minutes.
Choice B rationale: PCA devices often have a lock-out period to prevent patients from administering too many doses too quickly and risking overdose.
Choice C rationale: Patient-controlled analgesia is designed for the patient to self- administer the medication. Allowing family members to press the button may lead to inaccurate dosing.
Choice D rationale: Morphine should be administered as needed, not preemptively.
Administering the medication 10 minutes before physical therapy could result in excessive sedation.

A. "Both can be prescribed by your primary care provider." B. "Both can cause severe respiratory depression." C. "Physical dependence on buprenorphine is high." D. "Methadone is not addictive."

Correct Answer is A

Explanation

Choice A rationale: Both methadone and buprenorphine can be prescribed for the treatment of opioid use disorder, and their availability is not limited to specialized addiction treatment centers.
Choice B rationale: While both medications can cause respiratory depression, it is not a defining characteristic of their use in opioid use disorder treatment.
Choice C rationale: Physical dependence is a potential concern with both medications, but the statement that physical dependence on buprenorphine is high is not accurate.
Choice D rationale: The statement that "Methadone is not addictive" is not accurate; both methadone and buprenorphine are used to manage opioid addiction.

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The nurse is administering diphenhydramine (Benedryl), a neuropharmacologic agent that works by doing what?

Nursing Test Bank

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