ATI RN
ATI Capstone Pharmacology Assessment 1
1. A client is prescribed spironolactone. Which of the following findings would indicate an adverse effect of this medication?
- A. Hyperkalemia
- B. Hypokalemia
- C. Hyponatremia
- D. Hypernatremia
Correct answer: A
Rationale: Hyperkalemia is the correct answer as it is an adverse effect associated with spironolactone, a potassium-sparing diuretic. Spironolactone works by blocking the aldosterone receptor in the distal convoluted tubule, leading to decreased potassium excretion and potential hyperkalemia. Hypokalemia (choice B) and hyponatremia (choice C) are not typically associated with spironolactone use. Hypernatremia (choice D) is also an unlikely finding with spironolactone.
2. 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.
3. A nurse has provided education to a client regarding prescribed levothyroxine sodium. Which of the following client statements demonstrates understanding of medication administration?
- A. I should take my medication as needed to alleviate symptoms
- B. I should take the medication in divided doses to ensure therapeutic drug levels
- C. I should take the medication in the morning to prevent insomnia
- D. I should take the medication on a full stomach
Correct answer: C
Rationale: Levothyroxine should be taken once in the morning to prevent insomnia and maintain therapeutic levels.
4. A nurse is preparing to administer morphine sulfate 2 mg IV bolus. Available is morphine sulfate 10 mg/mL. How many mL should the nurse administer per dose?
- A. 0.2 mL
- B. 0.4 mL
- C. 0.6 mL
- D. 0.8 mL
Correct answer: A
Rationale: The nurse should administer 0.2 mL of morphine sulfate. To calculate this, divide the desired dose (2 mg) by the concentration of the available solution (10 mg/mL). 2 mg / 10 mg/mL = 0.2 mL. Therefore, the nurse should administer 0.2 mL of morphine sulfate. Choices B, C, and D are incorrect as they do not reflect the accurate calculation based on the provided concentration and desired dose.
5. A nurse is caring for a client receiving theophylline for chronic obstructive pulmonary disease (COPD). Which of the following client findings indicates the need for immediate intervention?
- A. Productive cough
- B. Drowsiness
- C. Vomiting
- D. Polyuria
Correct answer: D
Rationale: Polyuria is a sign of theophylline toxicity and requires immediate intervention. Theophylline toxicity can lead to serious complications, and polyuria is a concerning symptom that indicates the need for urgent medical attention. Productive cough, drowsiness, and vomiting are common side effects of theophylline but are not typically indicative of immediate life-threatening issues like polyuria in the context of theophylline toxicity.
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