ATI Pharmacology Midterm Exam 2026
SECTION 1 — PHARMACOLOGICAL PRINCIPLES & SAFE MEDICATION
ADMINISTRATION
1.
,A nurse is reviewing pharmacokinetics with a client. Which process
describes the movement of a medication from the gastrointestinal
tract into the bloodstream?
A. Distribution
B. Metabolism
C. Absorption
D. Excretion
Rationale: Absorption is the movement of a medication from its site
of administration into the systemic circulation.
2.
Which organ is primarily responsible for metabolism of many
medications?
A. Heart
B. Liver
C. Pancreas
D. Spleen
Rationale: Hepatic enzymes, particularly the cytochrome P450
system, metabolize many medications.
3.
Which organ is the primary route for elimination of many
medications and their metabolites?
A. Liver
B. Lungs
C. Kidneys
D. Pancreas
Rationale: The kidneys eliminate many water-soluble medications
and metabolites through urine.
4.
,A medication has a short half-life. Which statement best describes
this medication?
A. It remains in the body for several days.
B. It requires only one dose per month.
C. It is eliminated relatively quickly.
D. It cannot produce adverse effects.
Rationale: Half-life is the time required for the serum concentration
of a medication to decrease by 50%.
5.
A nurse is administering a medication with a narrow therapeutic
index. Which action is most appropriate?
A. Administer the medication without laboratory monitoring.
B. Monitor serum medication levels as prescribed.
C. Give the medication only when symptoms occur.
D. Double the dose if the first dose is ineffective.
Rationale: Drugs with a narrow therapeutic index have a small
difference between therapeutic and toxic concentrations.
6.
Which term describes the study of what a medication does to the
body?
A. Pharmacokinetics
B. Pharmacodynamics
C. Pharmacogenomics
D. Toxicokinetics
Rationale: Pharmacodynamics describes medication effects and
mechanisms of action in the body.
7.
Which term describes what the body does to a medication?
, A. Pharmacodynamics
B. Pharmacokinetics
C. Pharmacotherapy
D. Pharmacogenetics
Rationale: Pharmacokinetics includes absorption, distribution,
metabolism, and excretion.
8.
A client asks why an oral medication takes longer to work than an IV
medication. Which response is appropriate?
A. "Oral medications cannot enter the bloodstream."
B. "IV medications must first be metabolized."
C. "IV medications enter the bloodstream directly."
D. "Oral medications always have a longer half-life."
Rationale: IV administration delivers medication directly into systemic
circulation and therefore generally produces a faster onset.
9.
Which route generally provides the most rapid systemic medication
effect?
A. Oral
B. Subcutaneous
C. Intramuscular
D. Intravenous
Rationale: IV medications enter systemic circulation directly.
10.
A medication prescribed "STAT" should be administered:
A. At bedtime
B. During the next medication pass
SECTION 1 — PHARMACOLOGICAL PRINCIPLES & SAFE MEDICATION
ADMINISTRATION
1.
,A nurse is reviewing pharmacokinetics with a client. Which process
describes the movement of a medication from the gastrointestinal
tract into the bloodstream?
A. Distribution
B. Metabolism
C. Absorption
D. Excretion
Rationale: Absorption is the movement of a medication from its site
of administration into the systemic circulation.
2.
Which organ is primarily responsible for metabolism of many
medications?
A. Heart
B. Liver
C. Pancreas
D. Spleen
Rationale: Hepatic enzymes, particularly the cytochrome P450
system, metabolize many medications.
3.
Which organ is the primary route for elimination of many
medications and their metabolites?
A. Liver
B. Lungs
C. Kidneys
D. Pancreas
Rationale: The kidneys eliminate many water-soluble medications
and metabolites through urine.
4.
,A medication has a short half-life. Which statement best describes
this medication?
A. It remains in the body for several days.
B. It requires only one dose per month.
C. It is eliminated relatively quickly.
D. It cannot produce adverse effects.
Rationale: Half-life is the time required for the serum concentration
of a medication to decrease by 50%.
5.
A nurse is administering a medication with a narrow therapeutic
index. Which action is most appropriate?
A. Administer the medication without laboratory monitoring.
B. Monitor serum medication levels as prescribed.
C. Give the medication only when symptoms occur.
D. Double the dose if the first dose is ineffective.
Rationale: Drugs with a narrow therapeutic index have a small
difference between therapeutic and toxic concentrations.
6.
Which term describes the study of what a medication does to the
body?
A. Pharmacokinetics
B. Pharmacodynamics
C. Pharmacogenomics
D. Toxicokinetics
Rationale: Pharmacodynamics describes medication effects and
mechanisms of action in the body.
7.
Which term describes what the body does to a medication?
, A. Pharmacodynamics
B. Pharmacokinetics
C. Pharmacotherapy
D. Pharmacogenetics
Rationale: Pharmacokinetics includes absorption, distribution,
metabolism, and excretion.
8.
A client asks why an oral medication takes longer to work than an IV
medication. Which response is appropriate?
A. "Oral medications cannot enter the bloodstream."
B. "IV medications must first be metabolized."
C. "IV medications enter the bloodstream directly."
D. "Oral medications always have a longer half-life."
Rationale: IV administration delivers medication directly into systemic
circulation and therefore generally produces a faster onset.
9.
Which route generally provides the most rapid systemic medication
effect?
A. Oral
B. Subcutaneous
C. Intramuscular
D. Intravenous
Rationale: IV medications enter systemic circulation directly.
10.
A medication prescribed "STAT" should be administered:
A. At bedtime
B. During the next medication pass
