NR 210 DRUG CARD- PRINCIPLES OF PHARMACOLOGY EXAM 1 (GALEN) – QUESTIONS AND ANSWERS |
VERIFIED AND WELL DETAILED ANSWERS | PLUS RATIONALES | GUARANTEED PASS | LATEST EXAM UPDATE
Core Domains:
- Pharmacokinetics (Absorption, Distribution, Metabolism, Excretion)
- Pharmacodynamics (Receptor Theory, Dose-Response, Agonists/Antagonists)
- Drug Interactions and Adverse Effects
- Legal and Ethical Considerations in Pharmacology
- Medication Administration and Safety (Rights of Administration)
- Autonomic Nervous System Pharmacology
- Cardiovascular and Renal Pharmacology
- Gastrointestinal and Endocrine Pharmacology
- Pain Management and Anti-inflammatory Agents
- Toxicology and Emergency Preparedness
Introduction:
This comprehensive assessment is designed to rigorously evaluate your foundational knowledge of pharmacology
principles as covered in NR 210. It focuses on core concepts including pharmacokinetic and pharmacodynamic
processes, drug classifications, clinical applications, and the critical role of the nurse in medication safety. The exam
utilizes multiple-choice questions and scenario-based items to test your ability to apply theoretical knowledge to real-
world clinical decision-making. Emphasis is placed on understanding drug mechanisms, predicting drug interactions,
and navigating legal and ethical responsibilities. Successful completion demonstrates readiness for advanced
pharmacological study and safe, competent nursing practice.
,SECTION ONE: QUESTIONS 1–100
1. A nurse is preparing to administer a medication that is known to be highly protein-bound. Which of the
following conditions would most likely increase the risk of drug toxicity?
A. Decreased liver function
B. Decreased serum albumin levels
C. Increased glomerular filtration rate
D. Increased gastrointestinal motility
🟢 B. Decreased serum albumin levels
🔴 Explanation: A decrease in serum albumin reduces the number of protein-binding sites available for the drug.
This leads to a higher concentration of unbound, free, and pharmacologically active drug in the bloodstream,
significantly increasing the risk of toxicity.
2. A patient is prescribed a drug that is a weak acid. The nurse understands that this drug will be primarily
absorbed in which part of the gastrointestinal tract?
A. The mouth
B. The stomach
C. The small intestine
D. The colon
🟢 B. The stomach
🔴 Explanation: Weak acids are non-ionized (and therefore lipid-soluble) in acidic environments like the stomach
(pH 1.5-3.5). This non-ionized form can readily cross cell membranes, facilitating absorption.
3. A patient is taking a medication with a half-life of 4 hours. How long will it take for the drug to reach a steady-
state concentration?
,A. 8 hours
B. 12 hours
C. 16 hours
D. 20 hours
🟢 D. 20 hours
🔴 Explanation: It takes approximately 4 to 5 half-lives for a drug to reach a steady-state concentration. At a 4-hour
half-life, this would be 4 hours x 5 half-lives = 20 hours.
4. A nurse is caring for a patient who is receiving a drug that is a known cytochrome P450 (CYP) 3A4 inducer. The
nurse should monitor the patient for which of the following effects when co-administered with other
medications?
A. Increased therapeutic effect of the other medication
B. Decreased therapeutic effect of the other medication
C. No change in the therapeutic effect of the other medication
D. A severe allergic reaction to the other medication
🟢 B. Decreased therapeutic effect of the other medication
🔴 Explanation: CYP3A4 inducers increase the metabolism of drugs that are substrates for this enzyme. This results
in faster clearance and lower plasma concentrations of the co-administered drug, leading to a decreased therapeutic
effect.
5. A patient has a prescription for morphine sulfate. The nurse understands that this drug acts on which type of
receptor?
A. Alpha-1 adrenergic receptors
B. Beta-1 adrenergic receptors
, C. Mu (μ) opioid receptors
D. Dopamine D2 receptors
🟢 C. Mu (μ) opioid receptors
🔴 Explanation: Morphine is a potent opioid agonist that exerts its analgesic effects primarily by binding to mu (μ)
opioid receptors in the central nervous system.
6. A patient is prescribed a drug that has a therapeutic index of 2. The nurse interprets this as:
A. The drug is relatively safe.
B. The drug has a narrow margin of safety.
C. The drug is 2 times more effective than a placebo.
D. The drug has a high potential for abuse.
🟢 B. The drug has a narrow margin of safety.
🔴 Explanation: The therapeutic index is the ratio of a drug's toxic dose to its effective dose (TD50/ED50). A low
therapeutic index (e.g., 2) means there is a small margin of safety, and the risk of toxicity is high even at therapeutic
doses. Close monitoring is required.
7. A nurse is providing discharge teaching to a patient prescribed a monoamine oxidase inhibitor (MAOI). Which
of the following dietary instructions is essential to prevent a potential drug-food interaction?
A. Avoid grapefruit juice.
B. Avoid foods high in tyramine.
C. Avoid foods high in potassium.
D. Avoid foods containing vitamin K.
🟢 B. Avoid foods high in tyramine.
VERIFIED AND WELL DETAILED ANSWERS | PLUS RATIONALES | GUARANTEED PASS | LATEST EXAM UPDATE
Core Domains:
- Pharmacokinetics (Absorption, Distribution, Metabolism, Excretion)
- Pharmacodynamics (Receptor Theory, Dose-Response, Agonists/Antagonists)
- Drug Interactions and Adverse Effects
- Legal and Ethical Considerations in Pharmacology
- Medication Administration and Safety (Rights of Administration)
- Autonomic Nervous System Pharmacology
- Cardiovascular and Renal Pharmacology
- Gastrointestinal and Endocrine Pharmacology
- Pain Management and Anti-inflammatory Agents
- Toxicology and Emergency Preparedness
Introduction:
This comprehensive assessment is designed to rigorously evaluate your foundational knowledge of pharmacology
principles as covered in NR 210. It focuses on core concepts including pharmacokinetic and pharmacodynamic
processes, drug classifications, clinical applications, and the critical role of the nurse in medication safety. The exam
utilizes multiple-choice questions and scenario-based items to test your ability to apply theoretical knowledge to real-
world clinical decision-making. Emphasis is placed on understanding drug mechanisms, predicting drug interactions,
and navigating legal and ethical responsibilities. Successful completion demonstrates readiness for advanced
pharmacological study and safe, competent nursing practice.
,SECTION ONE: QUESTIONS 1–100
1. A nurse is preparing to administer a medication that is known to be highly protein-bound. Which of the
following conditions would most likely increase the risk of drug toxicity?
A. Decreased liver function
B. Decreased serum albumin levels
C. Increased glomerular filtration rate
D. Increased gastrointestinal motility
🟢 B. Decreased serum albumin levels
🔴 Explanation: A decrease in serum albumin reduces the number of protein-binding sites available for the drug.
This leads to a higher concentration of unbound, free, and pharmacologically active drug in the bloodstream,
significantly increasing the risk of toxicity.
2. A patient is prescribed a drug that is a weak acid. The nurse understands that this drug will be primarily
absorbed in which part of the gastrointestinal tract?
A. The mouth
B. The stomach
C. The small intestine
D. The colon
🟢 B. The stomach
🔴 Explanation: Weak acids are non-ionized (and therefore lipid-soluble) in acidic environments like the stomach
(pH 1.5-3.5). This non-ionized form can readily cross cell membranes, facilitating absorption.
3. A patient is taking a medication with a half-life of 4 hours. How long will it take for the drug to reach a steady-
state concentration?
,A. 8 hours
B. 12 hours
C. 16 hours
D. 20 hours
🟢 D. 20 hours
🔴 Explanation: It takes approximately 4 to 5 half-lives for a drug to reach a steady-state concentration. At a 4-hour
half-life, this would be 4 hours x 5 half-lives = 20 hours.
4. A nurse is caring for a patient who is receiving a drug that is a known cytochrome P450 (CYP) 3A4 inducer. The
nurse should monitor the patient for which of the following effects when co-administered with other
medications?
A. Increased therapeutic effect of the other medication
B. Decreased therapeutic effect of the other medication
C. No change in the therapeutic effect of the other medication
D. A severe allergic reaction to the other medication
🟢 B. Decreased therapeutic effect of the other medication
🔴 Explanation: CYP3A4 inducers increase the metabolism of drugs that are substrates for this enzyme. This results
in faster clearance and lower plasma concentrations of the co-administered drug, leading to a decreased therapeutic
effect.
5. A patient has a prescription for morphine sulfate. The nurse understands that this drug acts on which type of
receptor?
A. Alpha-1 adrenergic receptors
B. Beta-1 adrenergic receptors
, C. Mu (μ) opioid receptors
D. Dopamine D2 receptors
🟢 C. Mu (μ) opioid receptors
🔴 Explanation: Morphine is a potent opioid agonist that exerts its analgesic effects primarily by binding to mu (μ)
opioid receptors in the central nervous system.
6. A patient is prescribed a drug that has a therapeutic index of 2. The nurse interprets this as:
A. The drug is relatively safe.
B. The drug has a narrow margin of safety.
C. The drug is 2 times more effective than a placebo.
D. The drug has a high potential for abuse.
🟢 B. The drug has a narrow margin of safety.
🔴 Explanation: The therapeutic index is the ratio of a drug's toxic dose to its effective dose (TD50/ED50). A low
therapeutic index (e.g., 2) means there is a small margin of safety, and the risk of toxicity is high even at therapeutic
doses. Close monitoring is required.
7. A nurse is providing discharge teaching to a patient prescribed a monoamine oxidase inhibitor (MAOI). Which
of the following dietary instructions is essential to prevent a potential drug-food interaction?
A. Avoid grapefruit juice.
B. Avoid foods high in tyramine.
C. Avoid foods high in potassium.
D. Avoid foods containing vitamin K.
🟢 B. Avoid foods high in tyramine.
