ATI RN Pharmacology 2023
Proctored Exam NGN | 70
Questions & Verified Answers
| 2026 Latest A+ Version
,
,
, Cardiovascular & Anticoagulant Medications
1. A patient is prescribed warfarin for atrial fibrillation. Which INR result indicates
a therapeutic response?
• A. INR 1.0
• B. INR 1.5
• C. INR 2.5
• D. INR 5.0
Correct Answer: C
Rationale: Therapeutic INR for atrial fibrillation, DVT, or PE is 2.0–3.0. INR 1.0–1.5 is
subtherapeutic (clot risk). INR greater than 4.0 increases bleeding risk.
2. A client on heparin IV infusion develops bleeding. Which medication should the
nurse prepare to administer?
• A. Vitamin K
• B. Protamine sulfate
• C. Naloxone
• D. Flumazenil
Correct Answer: B
Rationale: Protamine sulfate reverses heparin. Vitamin K reverses warfarin. Naloxone
reverses opioids. Flumazenil reverses benzodiazepines.
3. A patient taking digoxin reports nausea, vomiting, and blurred vision with
yellow-green halos. What is the nurse's priority action?
• A. Administer antiemetic
• B. Check digoxin level
• C. Give next dose as ordered
• D. Increase fluid intake
Proctored Exam NGN | 70
Questions & Verified Answers
| 2026 Latest A+ Version
,
,
, Cardiovascular & Anticoagulant Medications
1. A patient is prescribed warfarin for atrial fibrillation. Which INR result indicates
a therapeutic response?
• A. INR 1.0
• B. INR 1.5
• C. INR 2.5
• D. INR 5.0
Correct Answer: C
Rationale: Therapeutic INR for atrial fibrillation, DVT, or PE is 2.0–3.0. INR 1.0–1.5 is
subtherapeutic (clot risk). INR greater than 4.0 increases bleeding risk.
2. A client on heparin IV infusion develops bleeding. Which medication should the
nurse prepare to administer?
• A. Vitamin K
• B. Protamine sulfate
• C. Naloxone
• D. Flumazenil
Correct Answer: B
Rationale: Protamine sulfate reverses heparin. Vitamin K reverses warfarin. Naloxone
reverses opioids. Flumazenil reverses benzodiazepines.
3. A patient taking digoxin reports nausea, vomiting, and blurred vision with
yellow-green halos. What is the nurse's priority action?
• A. Administer antiemetic
• B. Check digoxin level
• C. Give next dose as ordered
• D. Increase fluid intake
