ATI RN
ATI Pharmacology Proctored Exam 2024
1. What is the antidote for Warfarin?
- A. Vitamin D
- B. Vitamin C
- C. Vitamin K
- D. Vitamin B6
Correct answer: C
Rationale: Vitamin K is the antidote for Warfarin toxicity as it helps reverse the anticoagulant effects of Warfarin. Warfarin works by inhibiting vitamin K-dependent clotting factors, and administering vitamin K can replenish these factors, thereby counteracting the anticoagulant effects of Warfarin. Vitamin D, Vitamin C, and Vitamin B6 do not have the specific mechanism to counteract the anticoagulant effects of Warfarin, making them incorrect choices.
2. When starting therapy with doxorubicin, which of the following findings should the nurse instruct the client to report?
- A. Hair loss
- B. Fatigue
- C. Sore throat
- D. Red urine
Correct answer: C
Rationale: The nurse should instruct the client to report a sore throat because it can indicate an infection due to the immunosuppressive effects of doxorubicin. Doxorubicin is known to suppress the immune system, making patients more susceptible to infections. Monitoring and reporting early signs of infection, such as a sore throat, are essential to prevent complications. Hair loss and fatigue are common side effects of doxorubicin but do not typically indicate immediate concerns for infection. Red urine is a known side effect of doxorubicin but is not a priority over potentially serious infections that can arise.
3. A drug ending in the suffix (tidine) is considered a ______.
- A. Antidepressant
- B. Protease inhibitor
- C. Beta antagonist
- D. H antagonist
Correct answer: D
Rationale: Drugs ending in -tidine are histamine (H2) receptor antagonists, which block the action of histamine at the H2 receptors, commonly used to reduce stomach acid production. Therefore, the correct answer is an 'H antagonist.' It is essential to be familiar with drug suffixes as they can provide clues to the drug's class and function.
4. A client has a new prescription for metronidazole. The client should avoid which of the following?
- A. Dairy products
- B. Alcohol
- C. Leafy green vegetables
- D. Grapefruit juice
Correct answer: B
Rationale: The correct answer is B: Alcohol. Clients should avoid alcohol while taking metronidazole to prevent a disulfiram-like reaction, which can cause symptoms such as nausea, vomiting, headache, and flushing. Alcohol can interact with metronidazole and lead to adverse effects. Choices A, C, and D are not typically contraindicated with metronidazole. Dairy products, leafy green vegetables, and grapefruit juice do not have significant interactions with metronidazole, unlike alcohol.
5. A client reports taking Aspirin about four times daily for a sprained wrist. Which of the following prescribed medications taken by the client is contraindicated with aspirin?
- A. Digoxin
- B. Metformin
- C. Warfarin
- D. Nitroglycerin
Correct answer: C
Rationale: The correct answer is C, Warfarin. Aspirin increases the effect of anticoagulants like warfarin by inhibiting platelet aggregation, leading to an increased risk of bleeding. Therefore, the use of aspirin is generally contraindicated for clients taking warfarin. Choices A, B, and D are not contraindicated with aspirin. Digoxin, Metformin, and Nitroglycerin do not have significant interactions with Aspirin, unlike Warfarin, making them safe to use concomitantly.
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