A nurse is preparing to administer a medication and learns that it is a nonselective agonist. What does the nurse understand about this drug?
It directly activates receptors to affect a specific physiologic process.
It prevents receptor activation to affect a specific physiologic process.
It directly activates receptors to affect many physiologic processes.
It prevents receptor activation to affect many physiologic processes.
The Correct Answer is C
Choice A reason: Nonselective agonists activate multiple receptors, not specific ones, leading to widespread effects. Specific processes are targeted by selective agonists, so this is incorrect for nonselective drugs.
Choice B reason: Nonselective agonists activate, not prevent, receptors. Prevention is the role of antagonists, so this is incorrect for a nonselective agonist’s mechanism of action.
Choice C reason: Nonselective agonists activate multiple receptor types, affecting many physiologic processes (e.g., epinephrine). This broad action is their hallmark, making it the correct choice for the drug’s effect.
Choice D reason: Preventing receptor activation describes antagonists, not agonists. Nonselective agonists stimulate multiple processes, so this is incorrect for the drug’s pharmacological action.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A reason: For 10 mg at 5 mg/mL: 10 ÷ 5 = 2 mL. Choice A (0.5 mL) delivers 2.5 mg (0.5 × 5), underdosing Compazine, which may fail to control nausea or psychosis, making this choice incorrect for the prescribed dose.
Choice B reason: The correct volume is 10 mg ÷ 5 mg/mL = 2 mL. Choice B (4 mL) delivers 20 mg (4 × 5), overdosing Compazine, risking extrapyramidal symptoms or sedation, making this choice incorrect and potentially harmful for safe administration.
Choice C reason: For 10 mg, the volume is 2 mL (10 ÷ 5). Choice C (1 mL) delivers 5 mg (1 × 5), underdosing Compazine, which could be ineffective for nausea or psychiatric symptoms, making this choice inadequate for the ordered dose.
Choice D reason: Calculating 10 mg ÷ 5 mg/mL = 2 mL accurately delivers the ordered 10 mg of Compazine (prochlorperazine) for nausea or psychosis. This ensures therapeutic efficacy without overdose, aligning with safe intramuscular administration, making this the correct choice.
Correct Answer is ["C","D","E"]
Explanation
Choice A reason: Affinity is not about dosage form but the strength of drug-receptor binding. Dosage is unrelated to receptor interaction, so this is incorrect for affinity’s definition.
Choice B reason: Low affinity means weak attraction to receptors, not strong. High affinity indicates strong binding, so this statement is incorrect.
Choice C reason: High affinity means strong attraction between drug and receptor, enhancing binding and effect. This is accurate, making it a correct choice.
Choice D reason: Affinity influences potency; higher affinity often means greater potency at lower doses. This relationship is correct, making it a correct choice.
Choice E reason: Affinity is the strength of attraction between drug and receptor, a fundamental pharmacological concept. This definition is accurate, so this is a correct choice.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.