NSG 6005 Week 4 Quiz 2025 – South University |
Verified Questions with Correct Answers |
Updated A+ Study Resource
Question 1
Which pharmacokinetic process describes the movement of a drug from its site of administration
into the bloodstream?
A. Absorption
B. Distribution
C. Metabolism
D. Excretion
Correct Answer: A
Rationale:
Absorption is the process by which a drug enters the bloodstream from its administration site
(e.g., oral, intravenous, or subcutaneous). Distribution involves the drug’s movement to tissues,
metabolism is the chemical alteration of the drug, and excretion is the removal of the drug from
the body.
Question 2
A patient is prescribed a medication with a narrow therapeutic index. What does this indicate?
A. The drug is highly effective at low doses
B. The drug has a small margin of safety
C. The drug is rapidly metabolized
D. The drug has minimal side effects
Correct Answer: B
Rationale:
A narrow therapeutic index means the difference between a therapeutic dose and a toxic dose is
small, requiring careful monitoring to ensure safety (e.g., warfarin, digoxin). It does not imply
high efficacy, rapid metabolism, or minimal side effects.
Question 3
, Which of the following is an example of a pharmacodynamic drug interaction?
A. One drug inhibits the metabolism of another
B. Two drugs compete for the same receptor
C. A drug reduces the absorption of another
D. A drug increases renal excretion of another
Correct Answer: B
Rationale:
Pharmacodynamic interactions occur when drugs affect the same physiological process, such as
competing for the same receptor (e.g., beta-blockers and beta-agonists). Pharmacokinetic
interactions involve absorption, metabolism, or excretion (e.g., options A, C, D).
Question 4
A patient is prescribed a medication that is metabolized by the liver’s CYP450 enzyme system.
What should the nurse consider?
A. Potential drug interactions with other CYP450-metabolized drugs
B. The drug will have a short half-life
C. The drug is excreted unchanged in the urine
D. The drug is not affected by liver function
Correct Answer: A
Rationale:
The CYP450 enzyme system metabolizes many drugs, and co-administration of drugs that
induce or inhibit these enzymes can lead to interactions, altering drug levels. Half-life, excretion,
and liver function impact vary by drug, but interactions are the primary concern.
Question 5
What is the primary purpose of administering a medication with a high first-pass effect via the
intravenous route?
A. Increase gastrointestinal absorption
B. Bypass hepatic metabolism
C. Reduce the risk of allergic reactions
D. Prolong the drug’s half-life
Correct Answer: B
Rationale:
Drugs with a high first-pass effect are extensively metabolized by the liver when taken orally,
reducing bioavailability. Intravenous administration bypasses the liver initially, delivering the
full dose to the bloodstream. It does not affect absorption, allergies, or half-life directly.
Verified Questions with Correct Answers |
Updated A+ Study Resource
Question 1
Which pharmacokinetic process describes the movement of a drug from its site of administration
into the bloodstream?
A. Absorption
B. Distribution
C. Metabolism
D. Excretion
Correct Answer: A
Rationale:
Absorption is the process by which a drug enters the bloodstream from its administration site
(e.g., oral, intravenous, or subcutaneous). Distribution involves the drug’s movement to tissues,
metabolism is the chemical alteration of the drug, and excretion is the removal of the drug from
the body.
Question 2
A patient is prescribed a medication with a narrow therapeutic index. What does this indicate?
A. The drug is highly effective at low doses
B. The drug has a small margin of safety
C. The drug is rapidly metabolized
D. The drug has minimal side effects
Correct Answer: B
Rationale:
A narrow therapeutic index means the difference between a therapeutic dose and a toxic dose is
small, requiring careful monitoring to ensure safety (e.g., warfarin, digoxin). It does not imply
high efficacy, rapid metabolism, or minimal side effects.
Question 3
, Which of the following is an example of a pharmacodynamic drug interaction?
A. One drug inhibits the metabolism of another
B. Two drugs compete for the same receptor
C. A drug reduces the absorption of another
D. A drug increases renal excretion of another
Correct Answer: B
Rationale:
Pharmacodynamic interactions occur when drugs affect the same physiological process, such as
competing for the same receptor (e.g., beta-blockers and beta-agonists). Pharmacokinetic
interactions involve absorption, metabolism, or excretion (e.g., options A, C, D).
Question 4
A patient is prescribed a medication that is metabolized by the liver’s CYP450 enzyme system.
What should the nurse consider?
A. Potential drug interactions with other CYP450-metabolized drugs
B. The drug will have a short half-life
C. The drug is excreted unchanged in the urine
D. The drug is not affected by liver function
Correct Answer: A
Rationale:
The CYP450 enzyme system metabolizes many drugs, and co-administration of drugs that
induce or inhibit these enzymes can lead to interactions, altering drug levels. Half-life, excretion,
and liver function impact vary by drug, but interactions are the primary concern.
Question 5
What is the primary purpose of administering a medication with a high first-pass effect via the
intravenous route?
A. Increase gastrointestinal absorption
B. Bypass hepatic metabolism
C. Reduce the risk of allergic reactions
D. Prolong the drug’s half-life
Correct Answer: B
Rationale:
Drugs with a high first-pass effect are extensively metabolized by the liver when taken orally,
reducing bioavailability. Intravenous administration bypasses the liver initially, delivering the
full dose to the bloodstream. It does not affect absorption, allergies, or half-life directly.
