ATI RN
ATI Capstone Pharmacology Assessment 1
1. A nurse is caring for a client prescribed clopidogrel. Which of the following client histories is a contraindication to the administration of this medication?
- A. Recent surgery
- B. Peptic ulcer disease
- C. Bleeding disorder
- D. Uncontrolled hypertension
Correct answer: D
Rationale: The correct answer is D: Uncontrolled hypertension. Clopidogrel should not be administered to clients with uncontrolled hypertension due to the increased risk of bleeding. Recent surgery, peptic ulcer disease, and bleeding disorders are not absolute contraindications for clopidogrel administration.
2. A nurse is caring for a client who is prescribed warfarin. Which of the following laboratory tests should the nurse review to evaluate the therapeutic effect of this medication?
- A. aPTT
- B. INR
- C. Serum glucose
- D. Bilirubin
Correct answer: B
Rationale: The correct answer is B: INR. The International Normalized Ratio (INR) is the most reliable test for evaluating the therapeutic effects of warfarin therapy. INR measures the clotting ability of the blood and helps determine if the dosage of warfarin is within the therapeutic range. Choice A, aPTT, is not typically used to monitor the effects of warfarin. Choice C, Serum glucose, and choice D, Bilirubin, are not relevant to monitoring the therapeutic effect of warfarin.
3. A client with an artificial heart valve is prescribed warfarin therapy. Which of the following laboratory values should the nurse monitor to assess the therapeutic effect of warfarin?
- A. Hemoglobin (Hgb)
- B. Prothrombin time (PT)
- C. Bleeding time
- D. Activated partial thromboplastin time (aPTT)
Correct answer: B
Rationale: The correct answer is B: Prothrombin time (PT). Warfarin is an anticoagulant medication that works by inhibiting the clotting factors dependent on vitamin K, such as factors II, VII, IX, and X. The prothrombin time (PT) measures the extrinsic pathway and is used to monitor the therapeutic effects of warfarin therapy. Monitoring PT helps assess the time it takes for the blood to clot, ensuring that the anticoagulant effect is within the desired range. Choices A, C, and D are incorrect because hemoglobin (Hgb) measures the amount of hemoglobin in the blood, bleeding time assesses the time it takes for bleeding to stop, and activated partial thromboplastin time (aPTT) is used to monitor heparin therapy, not warfarin therapy.
4. A nurse is preparing to administer ondansetron to a client. Which of the following therapeutic effects should the nurse expect from this medication?
- A. Decreased nausea
- B. Increased appetite
- C. Increased heart rate
- D. Relief of headache
Correct answer: A
Rationale: The correct answer is A: Decreased nausea. Ondansetron is classified as an antiemetic medication, which means it is used to relieve nausea and vomiting by blocking serotonin in the chemoreceptor trigger zone. Therefore, the nurse administering ondansetron should expect a therapeutic effect of decreased nausea. Choice B, increased appetite, is incorrect as ondansetron does not affect appetite. Choice C, increased heart rate, is incorrect as ondansetron does not have a direct effect on heart rate. Choice D, relief of headache, is also incorrect as the primary therapeutic effect of ondansetron is to alleviate nausea and vomiting, not headaches.
5. A nurse is reviewing the medical record of a client who is prescribed acetaminophen for pain. Which of the following lab values should the nurse monitor to identify an adverse effect of the medication?
- A. Serum glucose
- B. Serum creatinine
- C. Serum potassium
- D. Serum bilirubin
Correct answer: B
Rationale: The correct answer is B: Serum creatinine. Acetaminophen is metabolized by the liver, so serum creatinine levels should be monitored for potential hepatotoxicity. Monitoring serum creatinine can help detect liver damage, a potential adverse effect of acetaminophen. Choices A, C, and D are incorrect because serum glucose is not directly affected by acetaminophen, serum potassium is not typically monitored for acetaminophen adverse effects, and serum bilirubin is more related to bile metabolism rather than acetaminophen-induced hepatotoxicity.
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