ATI PN | Pharmacology
OBJECTIVE ASSESSMENT - EXAM
ATI PN Pharmacology Proctor Exam |
2026/2027 NGN-Style Questions & Case
Studies | Pharmacology ATI (PDF)
2026/2027
Professional Nursing Exam | ATI Proctored Assessment
75 100% 2026/2027
QUESTIONS VERIFIED ANSWERS EDITION
TOPICS COVERED
Pharmacokinetics & Pharmacodynamics Opioid Analgesics & Sedatives
Medication Dosage Calculations Antibiotics & Antiviral Therapy
Cardiac Glycosides & Antiarrhythmics Immunosuppressants & Vaccines
COVER PAGE - 1
,cal Principles | Q1-Q15 | ATI PN Pharmacology Proctor Exam | 2026/2027 NGN-Style Questions & Case Studies | Pharmacology AT
Q1 Question 1 of 75
A 68-year-old client with chronic kidney disease is prescribed gentamicin. The nurse
reviews the client's laboratory results and notes a serum creatinine of 2.8 mg/dL. The
nurse recognizes that the prescriber must consider which pharmacokinetic principle
when determining the appropriate dose?
A. Absorption will be significantly decreased due to altered GI motility.
B. Distribution will be increased because of higher plasma protein binding.
C. Excretion will be reduced, leading to potential drug accumulation and toxicity.
D. Metabolism will be accelerated by hepatic enzyme induction.
Correct Answer: C
Rationale:
Gentamicin is primarily eliminated unchanged by the kidneys. In chronic kidney disease with elevated
creatinine, renal excretion is impaired, causing the drug to accumulate and increasing the risk of nephrotoxicity
and ototoxicity. The other options do not accurately describe the primary pharmacokinetic concern in this
scenario.
TI PN Pharmacology Proctor Exam | 2026/2027 NGN-Style Questions & Case Studies | Pharmacology ATI (PDF) 2026/2027 -- 2026/2027 | Passing Score: 80% | Page 2 of 7
, Q2 Question 2 of 75
A nurse is caring for a client who has been taking warfarin for 6 months. The client
begins taking phenytoin for newly diagnosed seizures. The nurse anticipates that the
client's INR will most likely change in which way?
A. INR will increase because phenytoin displaces warfarin from protein-binding sites.
B. INR will decrease because phenytoin induces hepatic enzymes that metabolize warfarin.
C. INR will remain unchanged because phenytoin does not interact with warfarin metabolism.
D. INR will increase because phenytoin inhibits warfarin excretion through the kidneys.
Correct Answer: B
Rationale:
Phenytoin is a potent hepatic enzyme inducer that increases the metabolism of warfarin, leading to decreased
anticoagulant effect and a lower INR. The nurse should monitor INR closely and anticipate a possible warfarin
dose increase.
TI PN Pharmacology Proctor Exam | 2026/2027 NGN-Style Questions & Case Studies | Pharmacology ATI (PDF) 2026/2027 -- 2026/2027 | Passing Score: 80% | Page 3 of 7
, Q3 Question 3 of 75
A client receiving morphine via patient-controlled analgesia (PCA) reports dizziness and
mild respiratory depression. The nurse understands that these effects are primarily
related to which pharmacodynamic concept?
A. Drug tolerance developing after repeated administration.
B. Agonist activity at mu-opioid receptors in the central nervous system.
C. Antagonist blockade of peripheral adrenergic receptors.
D. Enzymatic degradation of morphine in the gastrointestinal tract.
Correct Answer: B
Rationale:
Morphine is a mu-opioid receptor agonist. Its analgesic, sedative, and respiratory depressant effects result from
agonist activity at these CNS receptors. Dizziness and respiratory depression are expected pharmacodynamic
effects, not primarily tolerance or enzymatic degradation.
TI PN Pharmacology Proctor Exam | 2026/2027 NGN-Style Questions & Case Studies | Pharmacology ATI (PDF) 2026/2027 -- 2026/2027 | Passing Score: 80% | Page 4 of 7
OBJECTIVE ASSESSMENT - EXAM
ATI PN Pharmacology Proctor Exam |
2026/2027 NGN-Style Questions & Case
Studies | Pharmacology ATI (PDF)
2026/2027
Professional Nursing Exam | ATI Proctored Assessment
75 100% 2026/2027
QUESTIONS VERIFIED ANSWERS EDITION
TOPICS COVERED
Pharmacokinetics & Pharmacodynamics Opioid Analgesics & Sedatives
Medication Dosage Calculations Antibiotics & Antiviral Therapy
Cardiac Glycosides & Antiarrhythmics Immunosuppressants & Vaccines
COVER PAGE - 1
,cal Principles | Q1-Q15 | ATI PN Pharmacology Proctor Exam | 2026/2027 NGN-Style Questions & Case Studies | Pharmacology AT
Q1 Question 1 of 75
A 68-year-old client with chronic kidney disease is prescribed gentamicin. The nurse
reviews the client's laboratory results and notes a serum creatinine of 2.8 mg/dL. The
nurse recognizes that the prescriber must consider which pharmacokinetic principle
when determining the appropriate dose?
A. Absorption will be significantly decreased due to altered GI motility.
B. Distribution will be increased because of higher plasma protein binding.
C. Excretion will be reduced, leading to potential drug accumulation and toxicity.
D. Metabolism will be accelerated by hepatic enzyme induction.
Correct Answer: C
Rationale:
Gentamicin is primarily eliminated unchanged by the kidneys. In chronic kidney disease with elevated
creatinine, renal excretion is impaired, causing the drug to accumulate and increasing the risk of nephrotoxicity
and ototoxicity. The other options do not accurately describe the primary pharmacokinetic concern in this
scenario.
TI PN Pharmacology Proctor Exam | 2026/2027 NGN-Style Questions & Case Studies | Pharmacology ATI (PDF) 2026/2027 -- 2026/2027 | Passing Score: 80% | Page 2 of 7
, Q2 Question 2 of 75
A nurse is caring for a client who has been taking warfarin for 6 months. The client
begins taking phenytoin for newly diagnosed seizures. The nurse anticipates that the
client's INR will most likely change in which way?
A. INR will increase because phenytoin displaces warfarin from protein-binding sites.
B. INR will decrease because phenytoin induces hepatic enzymes that metabolize warfarin.
C. INR will remain unchanged because phenytoin does not interact with warfarin metabolism.
D. INR will increase because phenytoin inhibits warfarin excretion through the kidneys.
Correct Answer: B
Rationale:
Phenytoin is a potent hepatic enzyme inducer that increases the metabolism of warfarin, leading to decreased
anticoagulant effect and a lower INR. The nurse should monitor INR closely and anticipate a possible warfarin
dose increase.
TI PN Pharmacology Proctor Exam | 2026/2027 NGN-Style Questions & Case Studies | Pharmacology ATI (PDF) 2026/2027 -- 2026/2027 | Passing Score: 80% | Page 3 of 7
, Q3 Question 3 of 75
A client receiving morphine via patient-controlled analgesia (PCA) reports dizziness and
mild respiratory depression. The nurse understands that these effects are primarily
related to which pharmacodynamic concept?
A. Drug tolerance developing after repeated administration.
B. Agonist activity at mu-opioid receptors in the central nervous system.
C. Antagonist blockade of peripheral adrenergic receptors.
D. Enzymatic degradation of morphine in the gastrointestinal tract.
Correct Answer: B
Rationale:
Morphine is a mu-opioid receptor agonist. Its analgesic, sedative, and respiratory depressant effects result from
agonist activity at these CNS receptors. Dizziness and respiratory depression are expected pharmacodynamic
effects, not primarily tolerance or enzymatic degradation.
TI PN Pharmacology Proctor Exam | 2026/2027 NGN-Style Questions & Case Studies | Pharmacology ATI (PDF) 2026/2027 -- 2026/2027 | Passing Score: 80% | Page 4 of 7
