NSG 1540 PHARMACOTHERAPEUTICS FINAL EXAM QUESTIONS
2026/2027 EDITION | 200 VERIFIED QUESTIONS WITH DETAILED
RATIONALES
1. The nurse knows that the study of how drugs move through the
body is called:
A. Pharmacodynamics
B. Pharmacokinetics
C. Pharmacogenomics
D. Pharmacotherapeutics
CORRECT ANSWER: B
Rationale: Pharmacokinetics involves the absorption, distribution,
metabolism, and excretion (ADME) of drugs. Pharmacodynamics, on the
other hand, is the study of how drugs affect the body at receptor sites.
2. The process by which a drug is broken down into inactive forms is
known as:
A. Absorption
B. Distribution
C. Metabolism
D. Excretion
CORRECT ANSWER: C
Rationale: Metabolism is the biotransformation of a drug into
metabolites, often occurring in the liver. This process converts lipid-
soluble drugs into water-soluble forms for easier excretion by the
kidneys.
,3. The primary site of drug excretion is the:
A. Liver
B. Lungs
C. Kidneys
D. Skin
CORRECT ANSWER: C
Rationale: Most drugs are excreted through the kidneys via urine. The
liver also plays a role in drug elimination through bile, but the kidneys
are the primary route of excretion for most medications.
4. The nurse recognizes that the half-life of a drug refers to:
A. The total duration of drug effect
B. The time required for 50% of the drug to be eliminated
C. The onset of drug action
D. The peak plasma concentration
CORRECT ANSWER: B
Rationale: Half-life measures how long it takes for half of a drug dose to
be eliminated from the body. This determines dosing intervals and time
to reach steady state.
5. Which of the following routes has the fastest absorption rate?
A. Oral
B. Subcutaneous
C. Intravenous
D. Intramuscular
CORRECT ANSWER: C
,Rationale: Intravenous administration delivers the drug directly into the
bloodstream, providing immediate absorption and 100% bioavailability.
No absorption phase is required.
6. Bioavailability is defined as:
A. The time to reach peak plasma concentration
B. The fraction of an administered dose that reaches systemic
circulation unchanged
C. The total amount of drug excreted in urine
D. The degree of protein binding
CORRECT ANSWER: B
Rationale: Bioavailability is the percentage or fraction of the
administered drug that successfully reaches the systemic circulation. IV
administration provides 100% bioavailability.
7. A patient with liver cirrhosis may require lower doses of certain
drugs because:
A. Absorption is increased
B. Drug metabolism is impaired
C. Excretion is accelerated
D. Protein binding is enhanced
CORRECT ANSWER: B
Rationale: Liver cirrhosis reduces hepatic metabolic capacity, leading to
higher drug levels, prolonged half-life, and increased risk of toxicity.
8. The term "therapeutic index" refers to:
A. The ratio of a drug's toxic dose to its therapeutic dose
B. The time required for a drug to reach steady state
, C. The percentage of drug bound to plasma proteins
D. The volume of distribution of a drug
CORRECT ANSWER: A
Rationale: The therapeutic index is the ratio between the toxic dose and
the therapeutic dose of a drug. A narrow therapeutic index indicates a
small margin of safety and requires close monitoring.
9. Which of the following factors does NOT affect drug absorption?
A. Route of administration
B. Blood flow to the absorption site
C. Drug solubility
D. Liver function
CORRECT ANSWER: D
Rationale: Liver function affects drug metabolism, not absorption.
Absorption is influenced by the route of administration, blood flow,
drug solubility, and gastrointestinal factors.
10. The volume of distribution (Vd) of a drug is defined as:
A. The total amount of drug in the body divided by the plasma
concentration
B. The amount of drug excreted in urine over 24 hours
C. The percentage of drug bound to plasma proteins
D. The time required for 50% of the drug to be eliminated
CORRECT ANSWER: A
Rationale: Volume of distribution is the theoretical volume that would
be necessary to contain the total amount of an administered drug at
the same concentration that it is observed in the blood plasma.
2026/2027 EDITION | 200 VERIFIED QUESTIONS WITH DETAILED
RATIONALES
1. The nurse knows that the study of how drugs move through the
body is called:
A. Pharmacodynamics
B. Pharmacokinetics
C. Pharmacogenomics
D. Pharmacotherapeutics
CORRECT ANSWER: B
Rationale: Pharmacokinetics involves the absorption, distribution,
metabolism, and excretion (ADME) of drugs. Pharmacodynamics, on the
other hand, is the study of how drugs affect the body at receptor sites.
2. The process by which a drug is broken down into inactive forms is
known as:
A. Absorption
B. Distribution
C. Metabolism
D. Excretion
CORRECT ANSWER: C
Rationale: Metabolism is the biotransformation of a drug into
metabolites, often occurring in the liver. This process converts lipid-
soluble drugs into water-soluble forms for easier excretion by the
kidneys.
,3. The primary site of drug excretion is the:
A. Liver
B. Lungs
C. Kidneys
D. Skin
CORRECT ANSWER: C
Rationale: Most drugs are excreted through the kidneys via urine. The
liver also plays a role in drug elimination through bile, but the kidneys
are the primary route of excretion for most medications.
4. The nurse recognizes that the half-life of a drug refers to:
A. The total duration of drug effect
B. The time required for 50% of the drug to be eliminated
C. The onset of drug action
D. The peak plasma concentration
CORRECT ANSWER: B
Rationale: Half-life measures how long it takes for half of a drug dose to
be eliminated from the body. This determines dosing intervals and time
to reach steady state.
5. Which of the following routes has the fastest absorption rate?
A. Oral
B. Subcutaneous
C. Intravenous
D. Intramuscular
CORRECT ANSWER: C
,Rationale: Intravenous administration delivers the drug directly into the
bloodstream, providing immediate absorption and 100% bioavailability.
No absorption phase is required.
6. Bioavailability is defined as:
A. The time to reach peak plasma concentration
B. The fraction of an administered dose that reaches systemic
circulation unchanged
C. The total amount of drug excreted in urine
D. The degree of protein binding
CORRECT ANSWER: B
Rationale: Bioavailability is the percentage or fraction of the
administered drug that successfully reaches the systemic circulation. IV
administration provides 100% bioavailability.
7. A patient with liver cirrhosis may require lower doses of certain
drugs because:
A. Absorption is increased
B. Drug metabolism is impaired
C. Excretion is accelerated
D. Protein binding is enhanced
CORRECT ANSWER: B
Rationale: Liver cirrhosis reduces hepatic metabolic capacity, leading to
higher drug levels, prolonged half-life, and increased risk of toxicity.
8. The term "therapeutic index" refers to:
A. The ratio of a drug's toxic dose to its therapeutic dose
B. The time required for a drug to reach steady state
, C. The percentage of drug bound to plasma proteins
D. The volume of distribution of a drug
CORRECT ANSWER: A
Rationale: The therapeutic index is the ratio between the toxic dose and
the therapeutic dose of a drug. A narrow therapeutic index indicates a
small margin of safety and requires close monitoring.
9. Which of the following factors does NOT affect drug absorption?
A. Route of administration
B. Blood flow to the absorption site
C. Drug solubility
D. Liver function
CORRECT ANSWER: D
Rationale: Liver function affects drug metabolism, not absorption.
Absorption is influenced by the route of administration, blood flow,
drug solubility, and gastrointestinal factors.
10. The volume of distribution (Vd) of a drug is defined as:
A. The total amount of drug in the body divided by the plasma
concentration
B. The amount of drug excreted in urine over 24 hours
C. The percentage of drug bound to plasma proteins
D. The time required for 50% of the drug to be eliminated
CORRECT ANSWER: A
Rationale: Volume of distribution is the theoretical volume that would
be necessary to contain the total amount of an administered drug at
the same concentration that it is observed in the blood plasma.
