,ATI Pharmacology Assessment - RN Exam Questions And Answers
2026/2027
1.** A nurse is preparing to administer a medication to a client. The nurse
understands that the term "pharmacokinetics" refers to which of the
following?
A) The study of drug interactions and their clinical significance
B) The study of what the body does to a drug (absorption, distribution,
metabolism, excretion)
C) The study of what a drug does to the body (drug-receptor interactions)
D) The study of drug toxicity and adverse effects
**Correct Answer:** B) The study of what the body does to a drug
(absorption, distribution, metabolism, excretion)
**Rationale:** Pharmacokinetics is the study of what the body does to a
drug, including the processes of absorption, distribution, metabolism, and
excretion (ADME). Pharmacodynamics (C) is the study of what a drug does to
the body.
**2.** A patient is receiving a drug that has a half-life of 8 hours.
Approximately how long will it take for the drug to be eliminated from the
body?
A) 8 hours
B) 16 hours
C) 24 hours
D) 40 hours
**Correct Answer:** D) 40 hours
,**Rationale:** It takes approximately 4-5 half-lives for a drug to be
eliminated from the body. With a half-life of 8 hours, 5 × 8 = 40 hours.
**3.** A nurse is teaching a client about a newly prescribed medication.
Which statement best describes the "first-pass effect"?
A) The medication is absorbed directly into systemic circulation without
metabolism
B) The medication is metabolized by the liver before reaching systemic
circulation
C) The medication is excreted by the kidneys before therapeutic effect
occurs
D) The medication binds to plasma proteins and becomes inactive
**Correct Answer:** B) The medication is metabolized by the liver before
reaching systemic circulation
**Rationale:** The first-pass effect refers to the metabolism of an oral
medication by the liver before it reaches systemic circulation, reducing its
bioavailability. IV medications bypass this effect and have 100%
bioavailability.
**4.** A nurse is reviewing a client's medication list. Which factor would most
likely result in decreased drug absorption?
A) Administration with a full glass of water
B) Administration with a high-fat meal
C) Administration on an empty stomach
D) Administration with antacids
, **Correct Answer:** D) Administration with antacids
**Rationale:** Antacids can alter gastric pH and affect the absorption of
many medications. High-fat meals may increase absorption of lipophilic
drugs. Water generally enhances absorption.
**5.** A client is prescribed a medication that is highly protein-bound. Which
condition would increase the risk of toxicity from this medication?
A) Renal impairment
B) Hepatic impairment
C) Hypoalbuminemia
D) Hypertension
**Correct Answer:** C) Hypoalbuminemia
**Rationale:** Hypoalbuminemia (low serum albumin) results in fewer
protein-binding sites, leading to increased free (active) drug levels and risk of
toxicity. Renal and hepatic impairment affect excretion and metabolism,
respectively.
**6.** A nurse is teaching a client about a medication that has a narrow
therapeutic index. Which statement by the client indicates understanding?
A) "I can take extra doses if I miss one."
B) "I need regular blood tests to monitor my medication levels."
C) "This medication has a wide margin of safety."
D) "I can stop taking this medication when I feel better."
2026/2027
1.** A nurse is preparing to administer a medication to a client. The nurse
understands that the term "pharmacokinetics" refers to which of the
following?
A) The study of drug interactions and their clinical significance
B) The study of what the body does to a drug (absorption, distribution,
metabolism, excretion)
C) The study of what a drug does to the body (drug-receptor interactions)
D) The study of drug toxicity and adverse effects
**Correct Answer:** B) The study of what the body does to a drug
(absorption, distribution, metabolism, excretion)
**Rationale:** Pharmacokinetics is the study of what the body does to a
drug, including the processes of absorption, distribution, metabolism, and
excretion (ADME). Pharmacodynamics (C) is the study of what a drug does to
the body.
**2.** A patient is receiving a drug that has a half-life of 8 hours.
Approximately how long will it take for the drug to be eliminated from the
body?
A) 8 hours
B) 16 hours
C) 24 hours
D) 40 hours
**Correct Answer:** D) 40 hours
,**Rationale:** It takes approximately 4-5 half-lives for a drug to be
eliminated from the body. With a half-life of 8 hours, 5 × 8 = 40 hours.
**3.** A nurse is teaching a client about a newly prescribed medication.
Which statement best describes the "first-pass effect"?
A) The medication is absorbed directly into systemic circulation without
metabolism
B) The medication is metabolized by the liver before reaching systemic
circulation
C) The medication is excreted by the kidneys before therapeutic effect
occurs
D) The medication binds to plasma proteins and becomes inactive
**Correct Answer:** B) The medication is metabolized by the liver before
reaching systemic circulation
**Rationale:** The first-pass effect refers to the metabolism of an oral
medication by the liver before it reaches systemic circulation, reducing its
bioavailability. IV medications bypass this effect and have 100%
bioavailability.
**4.** A nurse is reviewing a client's medication list. Which factor would most
likely result in decreased drug absorption?
A) Administration with a full glass of water
B) Administration with a high-fat meal
C) Administration on an empty stomach
D) Administration with antacids
, **Correct Answer:** D) Administration with antacids
**Rationale:** Antacids can alter gastric pH and affect the absorption of
many medications. High-fat meals may increase absorption of lipophilic
drugs. Water generally enhances absorption.
**5.** A client is prescribed a medication that is highly protein-bound. Which
condition would increase the risk of toxicity from this medication?
A) Renal impairment
B) Hepatic impairment
C) Hypoalbuminemia
D) Hypertension
**Correct Answer:** C) Hypoalbuminemia
**Rationale:** Hypoalbuminemia (low serum albumin) results in fewer
protein-binding sites, leading to increased free (active) drug levels and risk of
toxicity. Renal and hepatic impairment affect excretion and metabolism,
respectively.
**6.** A nurse is teaching a client about a medication that has a narrow
therapeutic index. Which statement by the client indicates understanding?
A) "I can take extra doses if I miss one."
B) "I need regular blood tests to monitor my medication levels."
C) "This medication has a wide margin of safety."
D) "I can stop taking this medication when I feel better."
