ATI Pharmacology Examination
Practice Test 100 Questions And
Correct Answers (Verified Answers)
Plus Rationales 2026 Q&A Instant
Download Pdf
1. A nurse is preparing to administer a medication to a client who has a
history of renal failure. Which pharmacokinetic process should the nurse
expect to be most affected?
A. Absorption
B. Distribution
C. Metabolism
D. Excretion
Rationale: The kidneys are the primary organs responsible for the excretion of
drugs and their metabolites. Impaired renal function leads to decreased drug
clearance and a high risk for toxicity, often requiring dosage adjustments for
renally eliminated medications.
2. A nurse is teaching a client about the "First-pass effect." Which route of
administration is most affected by this process?
A. Intravenous
B. Sublingual
C. Oral
D. Transdermal
Rationale: Oral medications are absorbed in the GI tract and travel to the
liver via the portal vein. The liver may metabolize a large portion of the drug
,before it reaches systemic circulation, significantly reducing bioavailability.
Alternative routes like sublingual, IV, and transdermal avoid this effect.
3. A nurse is reviewing a client's medication record and notes a prescription
for a "trough level." When should the nurse schedule the blood draw?
A. 30 minutes after the dose is administered
B. Exactly mid-way between doses
C. 15 minutes before the next dose
D. Any time during the dosing interval
Rationale: The trough level represents the lowest concentration of the drug in
the bloodstream. It is measured immediately (usually 15–30 minutes) before
the next scheduled dose. Peak levels, by contrast, are measured after
administration.
4. A client is prescribed a medication that is highly protein-bound. Which
condition could increase the risk of toxicity?
A. Increased serum albumin levels
B. Decreased serum albumin levels
C. Increased renal function
D. Decreased hepatic function
Rationale: When serum albumin levels are decreased (e.g., malnutrition, liver
disease, nephrotic syndrome), more unbound (free) drug is available,
increasing the risk of toxicity. Only the unbound fraction is pharmacologically
active.
5. A nurse administers a medication with a half-life of 12 hours at 0800. At
what time will the medication reach approximately steady-state
concentration?
A. 2000 the same day
B. 0800 the next day
,C. 0800 on the third day
D. 0800 on the fifth day
Rationale: Steady-state concentration is typically reached after
approximately 4-5 half-lives. With a half-life of 12 hours, steady state would
be reached in approximately 48-60 hours, or about 2-2.5 days.
6. A nurse is preparing to administer a drug with a narrow therapeutic index.
Which action is most important?
A. Administer with food
B. Monitor serum drug levels
C. Give the drug IV push
D. Teach the client about side effects
Rationale: Narrow therapeutic index drugs (e.g., digoxin, warfarin, lithium)
have a small margin between therapeutic and toxic doses. Serum level
monitoring is essential to prevent toxicity.
7. A client asks why a medication is prescribed "every 6 hours" instead of
"once daily." The nurse explains it is related to which concept?
A. Half-life
B. First-pass effect
C. Protein binding
D. Therapeutic index
Rationale: Half-life determines how long a drug remains active. Drugs with
short half-lives require more frequent dosing to maintain therapeutic levels.
8. Which client is at greatest risk for drug toxicity due to impaired excretion?
A. Client with cirrhosis
B. Client with renal failure
C. Client with asthma
D. Client with GERD
, Rationale: The kidneys are the primary route of drug excretion. Renal failure
causes drugs to accumulate, increasing toxicity risk.
9. A nurse is calculating a pediatric dose. Which factor is most important?
A. Child's age in months
B. Child's weight in kilograms
C. Child's height
D. Parent's preference
Rationale: Pediatric doses are most accurately calculated based on weight in
kilograms. While age and body surface area may also be considered, weight
is the standard and most critical factor for safe dosing.
10. A nurse is preparing to administer eye drops to a client. Which actions
should the nurse take? (Select all that apply.)
A. Position the client supine with the head tilted back.
B. Ask the client to look up at the ceiling.
C. Instill the medication into the center of the conjunctival sac.
D. Instruct the client to blink vigorously once the drop enters the eye.
E. Apply gentle pressure to the inner canthus (lacrimal duct) for 1 minute
after instillation.
Rationale: Proper eye drop administration includes positioning the client
supine with head tilted back, asking the client to look up, instilling into the
conjunctival sac, and applying pressure to the inner canthus to prevent
systemic absorption. Blinking vigorously is not recommended as it may expel
the medication.
11. A nurse is completing discharge teaching for a client with a new
transdermal patch prescription. Which statements indicate understanding?
(Select all that apply.)
Practice Test 100 Questions And
Correct Answers (Verified Answers)
Plus Rationales 2026 Q&A Instant
Download Pdf
1. A nurse is preparing to administer a medication to a client who has a
history of renal failure. Which pharmacokinetic process should the nurse
expect to be most affected?
A. Absorption
B. Distribution
C. Metabolism
D. Excretion
Rationale: The kidneys are the primary organs responsible for the excretion of
drugs and their metabolites. Impaired renal function leads to decreased drug
clearance and a high risk for toxicity, often requiring dosage adjustments for
renally eliminated medications.
2. A nurse is teaching a client about the "First-pass effect." Which route of
administration is most affected by this process?
A. Intravenous
B. Sublingual
C. Oral
D. Transdermal
Rationale: Oral medications are absorbed in the GI tract and travel to the
liver via the portal vein. The liver may metabolize a large portion of the drug
,before it reaches systemic circulation, significantly reducing bioavailability.
Alternative routes like sublingual, IV, and transdermal avoid this effect.
3. A nurse is reviewing a client's medication record and notes a prescription
for a "trough level." When should the nurse schedule the blood draw?
A. 30 minutes after the dose is administered
B. Exactly mid-way between doses
C. 15 minutes before the next dose
D. Any time during the dosing interval
Rationale: The trough level represents the lowest concentration of the drug in
the bloodstream. It is measured immediately (usually 15–30 minutes) before
the next scheduled dose. Peak levels, by contrast, are measured after
administration.
4. A client is prescribed a medication that is highly protein-bound. Which
condition could increase the risk of toxicity?
A. Increased serum albumin levels
B. Decreased serum albumin levels
C. Increased renal function
D. Decreased hepatic function
Rationale: When serum albumin levels are decreased (e.g., malnutrition, liver
disease, nephrotic syndrome), more unbound (free) drug is available,
increasing the risk of toxicity. Only the unbound fraction is pharmacologically
active.
5. A nurse administers a medication with a half-life of 12 hours at 0800. At
what time will the medication reach approximately steady-state
concentration?
A. 2000 the same day
B. 0800 the next day
,C. 0800 on the third day
D. 0800 on the fifth day
Rationale: Steady-state concentration is typically reached after
approximately 4-5 half-lives. With a half-life of 12 hours, steady state would
be reached in approximately 48-60 hours, or about 2-2.5 days.
6. A nurse is preparing to administer a drug with a narrow therapeutic index.
Which action is most important?
A. Administer with food
B. Monitor serum drug levels
C. Give the drug IV push
D. Teach the client about side effects
Rationale: Narrow therapeutic index drugs (e.g., digoxin, warfarin, lithium)
have a small margin between therapeutic and toxic doses. Serum level
monitoring is essential to prevent toxicity.
7. A client asks why a medication is prescribed "every 6 hours" instead of
"once daily." The nurse explains it is related to which concept?
A. Half-life
B. First-pass effect
C. Protein binding
D. Therapeutic index
Rationale: Half-life determines how long a drug remains active. Drugs with
short half-lives require more frequent dosing to maintain therapeutic levels.
8. Which client is at greatest risk for drug toxicity due to impaired excretion?
A. Client with cirrhosis
B. Client with renal failure
C. Client with asthma
D. Client with GERD
, Rationale: The kidneys are the primary route of drug excretion. Renal failure
causes drugs to accumulate, increasing toxicity risk.
9. A nurse is calculating a pediatric dose. Which factor is most important?
A. Child's age in months
B. Child's weight in kilograms
C. Child's height
D. Parent's preference
Rationale: Pediatric doses are most accurately calculated based on weight in
kilograms. While age and body surface area may also be considered, weight
is the standard and most critical factor for safe dosing.
10. A nurse is preparing to administer eye drops to a client. Which actions
should the nurse take? (Select all that apply.)
A. Position the client supine with the head tilted back.
B. Ask the client to look up at the ceiling.
C. Instill the medication into the center of the conjunctival sac.
D. Instruct the client to blink vigorously once the drop enters the eye.
E. Apply gentle pressure to the inner canthus (lacrimal duct) for 1 minute
after instillation.
Rationale: Proper eye drop administration includes positioning the client
supine with head tilted back, asking the client to look up, instilling into the
conjunctival sac, and applying pressure to the inner canthus to prevent
systemic absorption. Blinking vigorously is not recommended as it may expel
the medication.
11. A nurse is completing discharge teaching for a client with a new
transdermal patch prescription. Which statements indicate understanding?
(Select all that apply.)
