The nurse is preparing to give a drug that will prevent receptor activation. Which term would describe this drug?
Agonist
Antagonist
Potent
Selective
The Correct Answer is B
Choice A reason: Agonists activate receptors, mimicking endogenous ligands, not preventing activation. The drug blocks receptors, so this is incorrect for the described action.
Choice B reason: Antagonists prevent receptor activation by blocking ligand binding, inhibiting effects. This matches the drug’s action, making it the correct term.
Choice C reason: Potent describes a drug’s strength, not its mechanism of preventing receptor activation. Antagonist defines the action, so this is incorrect.
Choice D reason: Selective refers to targeting specific receptors, not preventing activation. Antagonist describes the functional role, so this is incorrect.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A reason: Metabolic acidosis has low pH and HCO3-. Normal pH (7.41) and high HCO3- (30) suggest alkalosis, not acidosis, so this is incorrect for the ABG values.
Choice B reason: Respiratory acidosis has high PaCO2 and low pH. Normal pH and high HCO3- indicate metabolic alkalosis, not respiratory acidosis, so this is incorrect.
Choice C reason: Respiratory alkalosis has low PaCO2 and high pH. High PaCO2 (46) and HCO3- rule this out, pointing to metabolic alkalosis, so this is incorrect.
Choice D reason: Normal pH (7.41), high PaCO2 (46), and high HCO3- (30) indicate metabolic alkalosis fully compensated by respiratory CO2 retention. This is correct.
Correct Answer is D
Explanation
Choice A reason: Trade names are brand-specific (e.g., Tylenol for acetaminophen). N-acetyl-para-aminophenol is the chemical structure name, not a marketed brand. Trade names are proprietary and vary by manufacturer, while chemical names describe molecular composition, making this choice incorrect for the given term.
Choice B reason: Proprietary names are brand names owned by manufacturers (e.g., Advil for ibuprofen). N-acetyl-para-aminophenol is the chemical name for acetaminophen, not a proprietary or trade name, which is used for marketing purposes, making this choice incorrect for the drug’s nomenclature.
Choice C reason: Generic names are non-proprietary, like acetaminophen for N-acetyl-para-aminophenol. The term given is the chemical name, describing the molecular structure, not the standardized generic name used in clinical practice, making this choice incorrect for classifying N-acetyl-para-aminophenol.
Choice D reason: N-acetyl-para-aminophenol is the chemical name for acetaminophen, describing its molecular structure (an acetyl group on a para-aminophenol backbone). Chemical names are used in scientific contexts, distinct from generic or trade names, making this the correct choice for the drug’s nomenclature.
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