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: A blood pressure reading of 72/56 mmHg may be expected after spinal anesthesia. The nurse should continue to monitor the blood pressure to ensure it stabilizes within an acceptable range for the individual patient.
Choice B rationale: Headache is a common side effect of spinal anesthesia, and the nurse should assess for this but should not be the first action with the given blood pressure reading.
Choice C rationale: Administering oxygen by nasal cannula may not be necessary based solely on the blood pressure reading after spinal anesthesia.
Choice D rationale: Elevating the client's feet is not the first intervention for a blood pressure reading of 72/56 mmHg after spinal anesthesia. It may be considered if the blood pressure remains low and symptoms of hypotension are present.
Correct Answer is A
Explanation
Choice A rationale: Difficulty performing a voluntary movement, known as dyskinesia, is a potential side effect of Carbidopa-levodopa (Sinemet) used in Parkinson's Disease.
Choice B rationale: Increased blood pressure is not a typical side effect of Carbidopa-levodopa.
Choice C rationale: Increased constipation is not a typical side effect of Carbidopa- levodopa.
Choice D rationale: Itchiness of the skin is not a common side effect of Carbidopa- levodopa.
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