2023 ATI RN Pharmacology Proctor Actual Exams |
NGN-Style Questions | ATI Nursing Exam, Exams of
2026 Exam · 190 Questions · With Rationales
2023ati.
ATI RN Pharmacology Proctor Actual Exams | NGN-Style Questions | ATI Nursing Exam, Exams of Pharmacology
Question: 1 of 190
A patient with a history of atrial fibrillation on long-term warfarin therapy is diagnosed with a deep vein
thrombosis. The prescriber orders a heparin infusion. Which of the following best describes the
A. Additive effect on the intrinsic pathway via potentiation of antithrombin III
B. Synergistic inhibition of vitamin K-dependent factors by heparin
C. Antagonistic effect at the level of factor Xa due to different binding sites
D. Potentiation of warfarin's effect through displacement from albumin
PREVIOUS CONTINUE
A patient with a history of atrial fibrillation on long-term warfarin therapy is diagnosed
with a deep vein thrombosis. The prescriber orders a heparin infusion. Which of the
following best describes the pharmacodynamic interaction that occurs when these two
anticoagulants are co-administered?
' A. Additive effect on the intrinsic pathway via potentiation of antithrombin III
B. Synergistic inhibition of vitamin K-dependent factors by heparin
C. Antagonistic effect at the level of factor Xa due to different binding sites
D. Potentiation of warfarin's effect through displacement from albumin
Correct Answer: A
Heparin potentiates antithrombin III, inactivating thrombin and factor Xa (intrinsic pathway), while warfarin
inhibits vitamin K-dependent factors II, VII, IX, X. Both affect the coagulation cascade but via different
mechanisms, leading to an additive anticoagulant effect. Option B is incorrect because heparin does not inhibit
vitamin K factors. Option C is incorrect because they are not antagonistic. Option D describes a
pharmacokinetic interaction not relevant here.
Page 1 | 2023 ATI RN Pharmacology Proctor Actual Exams | NGN-Style Questions | ATI Nursing Exam, Exams of Pharmacology 2026
, 2023 ATI RN Pharmacology Proctor Actual Exams |
NGN-Style Questions | ATI Nursing Exam, Exams of
2026 Exam · 190 Questions · With Rationales
2023ati.
ATI RN Pharmacology Proctor Actual Exams | NGN-Style Questions | ATI Nursing Exam, Exams of Pharmacology
Question: 2 of 190
A patient receiving IV vancomycin develops red man syndrome during the infusion. The nurse notes that the
infusion was administered over 30 minutes. Which of the following best explains the pathophysiology of this
A. IgE-mediated type I hypersensitivity to vancomycin
B. Direct mast cell degranulation and histamine release
C. Complement activation due to immune complex formation
D. Delayed T-cell mediated hypersensitivity
PREVIOUS CONTINUE
A patient receiving IV vancomycin develops red man syndrome during the infusion. The
nurse notes that the infusion was administered over 30 minutes. Which of the following
best explains the pathophysiology of this reaction?
A. IgE-mediated type I hypersensitivity to vancomycin
' B. Direct mast cell degranulation and histamine release
C. Complement activation due to immune complex formation
D. Delayed T-cell mediated hypersensitivity
Correct Answer: B
Red man syndrome is caused by rapid infusion of vancomycin leading to direct mast cell degranulation and
histamine release, not an IgE-mediated allergy. Option A describes anaphylaxis, which is IgE-mediated. Option
C describes type III hypersensitivity. Option D describes type IV hypersensitivity. Slowing the infusion rate can
prevent this reaction.
Page 2 | 2023 ATI RN Pharmacology Proctor Actual Exams | NGN-Style Questions | ATI Nursing Exam, Exams of Pharmacology 2026
, 2023 ATI RN Pharmacology Proctor Actual Exams |
NGN-Style Questions | ATI Nursing Exam, Exams of
2026 Exam · 190 Questions · With Rationales
2023ati.
ATI RN Pharmacology Proctor Actual Exams | NGN-Style Questions | ATI Nursing Exam, Exams of Pharmacology
Question: 3 of 190
A nurse is reviewing the medication list of a patient with heart failure and reduced ejection fraction. The patient
is currently on lisinopril, metoprolol, furosemide, and spironolactone. Which of the following laboratory findings
A. Serum potassium 5.6 mEq/L
B. Serum sodium 132 mEq/L
C. Blood urea nitrogen 28 mg/dL
D. Serum magnesium 1.8 mg/dL
PREVIOUS CONTINUE
A nurse is reviewing the medication list of a patient with heart failure and reduced ejection
fraction. The patient is currently on lisinopril, metoprolol, furosemide, and spironolactone.
Which of the following laboratory findings would be most concerning for a potential
drug-drug interaction?
' A. Serum potassium 5.6 mEq/L
B. Serum sodium 132 mEq/L
C. Blood urea nitrogen 28 mg/dL
D. Serum magnesium 1.8 mg/dL
Correct Answer: A
Lisinopril (ACE inhibitor) and spironolactone (potassium-sparing diuretic) both increase serum potassium.
Hyperkalemia (5.6 mEq/L) indicates a dangerous drug interaction that can lead to cardiac arrhythmias. The
other values are abnormal but less immediately life-threatening: hyponatremia (B) may be from furosemide,
elevated BUN (C) could indicate prerenal azotemia, and magnesium (D) is within normal range.
Page 3 | 2023 ATI RN Pharmacology Proctor Actual Exams | NGN-Style Questions | ATI Nursing Exam, Exams of Pharmacology 2026
, 2023 ATI RN Pharmacology Proctor Actual Exams |
NGN-Style Questions | ATI Nursing Exam, Exams of
2026 Exam · 190 Questions · With Rationales
2023ati.
ATI RN Pharmacology Proctor Actual Exams | NGN-Style Questions | ATI Nursing Exam, Exams of Pharmacology
Question: 4 of 190
A patient with type 2 diabetes mellitus is started on metformin and glipizide. Which of the following best
describes the mechanism by which these two agents improve glycemic control?
A. Metformin increases insulin secretion; glipizide decreases hepatic gluconeogenesis
B. Metformin decreases hepatic glucose production; glipizide stimulates insulin release
C. Both drugs increase peripheral glucose uptake via GLUT4 translocation
D. Metformin inhibits alpha-glucosidase; glipizide delays gastric emptying
PREVIOUS CONTINUE
A patient with type 2 diabetes mellitus is started on metformin and glipizide. Which of the
following best describes the mechanism by which these two agents improve glycemic
control?
A. Metformin increases insulin secretion; glipizide decreases hepatic gluconeogenesis
' B. Metformin decreases hepatic glucose production; glipizide stimulates insulin release
C. Both drugs increase peripheral glucose uptake via GLUT4 translocation
D. Metformin inhibits alpha-glucosidase; glipizide delays gastric emptying
Correct Answer: B
Metformin primarily decreases hepatic glucose production and improves insulin sensitivity, while glipizide (a
sulfonylurea) stimulates insulin secretion from pancreatic beta cells. Option A reverses the mechanisms. Option
C is incorrect because only glipizide indirectly increases uptake via insulin, and metformin does not directly
affect GLUT4. Option D describes acarbose and pramlintide, respectively.
Page 4 | 2023 ATI RN Pharmacology Proctor Actual Exams | NGN-Style Questions | ATI Nursing Exam, Exams of Pharmacology 2026
NGN-Style Questions | ATI Nursing Exam, Exams of
2026 Exam · 190 Questions · With Rationales
2023ati.
ATI RN Pharmacology Proctor Actual Exams | NGN-Style Questions | ATI Nursing Exam, Exams of Pharmacology
Question: 1 of 190
A patient with a history of atrial fibrillation on long-term warfarin therapy is diagnosed with a deep vein
thrombosis. The prescriber orders a heparin infusion. Which of the following best describes the
A. Additive effect on the intrinsic pathway via potentiation of antithrombin III
B. Synergistic inhibition of vitamin K-dependent factors by heparin
C. Antagonistic effect at the level of factor Xa due to different binding sites
D. Potentiation of warfarin's effect through displacement from albumin
PREVIOUS CONTINUE
A patient with a history of atrial fibrillation on long-term warfarin therapy is diagnosed
with a deep vein thrombosis. The prescriber orders a heparin infusion. Which of the
following best describes the pharmacodynamic interaction that occurs when these two
anticoagulants are co-administered?
' A. Additive effect on the intrinsic pathway via potentiation of antithrombin III
B. Synergistic inhibition of vitamin K-dependent factors by heparin
C. Antagonistic effect at the level of factor Xa due to different binding sites
D. Potentiation of warfarin's effect through displacement from albumin
Correct Answer: A
Heparin potentiates antithrombin III, inactivating thrombin and factor Xa (intrinsic pathway), while warfarin
inhibits vitamin K-dependent factors II, VII, IX, X. Both affect the coagulation cascade but via different
mechanisms, leading to an additive anticoagulant effect. Option B is incorrect because heparin does not inhibit
vitamin K factors. Option C is incorrect because they are not antagonistic. Option D describes a
pharmacokinetic interaction not relevant here.
Page 1 | 2023 ATI RN Pharmacology Proctor Actual Exams | NGN-Style Questions | ATI Nursing Exam, Exams of Pharmacology 2026
, 2023 ATI RN Pharmacology Proctor Actual Exams |
NGN-Style Questions | ATI Nursing Exam, Exams of
2026 Exam · 190 Questions · With Rationales
2023ati.
ATI RN Pharmacology Proctor Actual Exams | NGN-Style Questions | ATI Nursing Exam, Exams of Pharmacology
Question: 2 of 190
A patient receiving IV vancomycin develops red man syndrome during the infusion. The nurse notes that the
infusion was administered over 30 minutes. Which of the following best explains the pathophysiology of this
A. IgE-mediated type I hypersensitivity to vancomycin
B. Direct mast cell degranulation and histamine release
C. Complement activation due to immune complex formation
D. Delayed T-cell mediated hypersensitivity
PREVIOUS CONTINUE
A patient receiving IV vancomycin develops red man syndrome during the infusion. The
nurse notes that the infusion was administered over 30 minutes. Which of the following
best explains the pathophysiology of this reaction?
A. IgE-mediated type I hypersensitivity to vancomycin
' B. Direct mast cell degranulation and histamine release
C. Complement activation due to immune complex formation
D. Delayed T-cell mediated hypersensitivity
Correct Answer: B
Red man syndrome is caused by rapid infusion of vancomycin leading to direct mast cell degranulation and
histamine release, not an IgE-mediated allergy. Option A describes anaphylaxis, which is IgE-mediated. Option
C describes type III hypersensitivity. Option D describes type IV hypersensitivity. Slowing the infusion rate can
prevent this reaction.
Page 2 | 2023 ATI RN Pharmacology Proctor Actual Exams | NGN-Style Questions | ATI Nursing Exam, Exams of Pharmacology 2026
, 2023 ATI RN Pharmacology Proctor Actual Exams |
NGN-Style Questions | ATI Nursing Exam, Exams of
2026 Exam · 190 Questions · With Rationales
2023ati.
ATI RN Pharmacology Proctor Actual Exams | NGN-Style Questions | ATI Nursing Exam, Exams of Pharmacology
Question: 3 of 190
A nurse is reviewing the medication list of a patient with heart failure and reduced ejection fraction. The patient
is currently on lisinopril, metoprolol, furosemide, and spironolactone. Which of the following laboratory findings
A. Serum potassium 5.6 mEq/L
B. Serum sodium 132 mEq/L
C. Blood urea nitrogen 28 mg/dL
D. Serum magnesium 1.8 mg/dL
PREVIOUS CONTINUE
A nurse is reviewing the medication list of a patient with heart failure and reduced ejection
fraction. The patient is currently on lisinopril, metoprolol, furosemide, and spironolactone.
Which of the following laboratory findings would be most concerning for a potential
drug-drug interaction?
' A. Serum potassium 5.6 mEq/L
B. Serum sodium 132 mEq/L
C. Blood urea nitrogen 28 mg/dL
D. Serum magnesium 1.8 mg/dL
Correct Answer: A
Lisinopril (ACE inhibitor) and spironolactone (potassium-sparing diuretic) both increase serum potassium.
Hyperkalemia (5.6 mEq/L) indicates a dangerous drug interaction that can lead to cardiac arrhythmias. The
other values are abnormal but less immediately life-threatening: hyponatremia (B) may be from furosemide,
elevated BUN (C) could indicate prerenal azotemia, and magnesium (D) is within normal range.
Page 3 | 2023 ATI RN Pharmacology Proctor Actual Exams | NGN-Style Questions | ATI Nursing Exam, Exams of Pharmacology 2026
, 2023 ATI RN Pharmacology Proctor Actual Exams |
NGN-Style Questions | ATI Nursing Exam, Exams of
2026 Exam · 190 Questions · With Rationales
2023ati.
ATI RN Pharmacology Proctor Actual Exams | NGN-Style Questions | ATI Nursing Exam, Exams of Pharmacology
Question: 4 of 190
A patient with type 2 diabetes mellitus is started on metformin and glipizide. Which of the following best
describes the mechanism by which these two agents improve glycemic control?
A. Metformin increases insulin secretion; glipizide decreases hepatic gluconeogenesis
B. Metformin decreases hepatic glucose production; glipizide stimulates insulin release
C. Both drugs increase peripheral glucose uptake via GLUT4 translocation
D. Metformin inhibits alpha-glucosidase; glipizide delays gastric emptying
PREVIOUS CONTINUE
A patient with type 2 diabetes mellitus is started on metformin and glipizide. Which of the
following best describes the mechanism by which these two agents improve glycemic
control?
A. Metformin increases insulin secretion; glipizide decreases hepatic gluconeogenesis
' B. Metformin decreases hepatic glucose production; glipizide stimulates insulin release
C. Both drugs increase peripheral glucose uptake via GLUT4 translocation
D. Metformin inhibits alpha-glucosidase; glipizide delays gastric emptying
Correct Answer: B
Metformin primarily decreases hepatic glucose production and improves insulin sensitivity, while glipizide (a
sulfonylurea) stimulates insulin secretion from pancreatic beta cells. Option A reverses the mechanisms. Option
C is incorrect because only glipizide indirectly increases uptake via insulin, and metformin does not directly
affect GLUT4. Option D describes acarbose and pramlintide, respectively.
Page 4 | 2023 ATI RN Pharmacology Proctor Actual Exams | NGN-Style Questions | ATI Nursing Exam, Exams of Pharmacology 2026
