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
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale: Alprazolam (Xanax) exerts its therapeutic effect by interacting with gamma-aminobutyric acid (GABA) receptors, leading to anxiolytic and sedative effects.
Choice B rationale: Norepinephrine is not the primary neurotransmitter affected by alprazolam.
Choice C rationale: Acetylcholine is not the primary neurotransmitter affected by alprazolam.
Choice D rationale: Serotonin (5-HT) is not the primary neurotransmitter affected by alprazolam.
Correct Answer is B
Explanation
Choice A rationale: A blood pressure reading of 130/80 mmHg is within the normal range and would not be a priority to report.
Choice B rationale: Expiratory wheezing is a potential adverse effect of propranolol, especially in patients with a history of asthma or other respiratory conditions. It should be reported promptly to the provider.
Choice C rationale: Hunger and thirst are not typically associated with adverse effects of propranolol.
Choice D rationale: A pulse of 98 beats/min is within the normal range and would not be a priority to report.
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