ATI RN
ATI Pharmacology Test Bank
1. A healthcare professional is reviewing laboratory results for a client who is receiving heparin via continuous IV infusion. Which of the following results indicates that the heparin infusion should be increased?
- A. aPTT of 90 seconds
- B. Platelet count of 150,000/mm³
- C. INR of 1.0
- D. Hgb of 15 g/dL
Correct answer: A
Rationale: An aPTT of 90 seconds is above the therapeutic range for heparin, which typically falls between 60-80 seconds. This indicates that the current heparin dose is too high, and the infusion rate should be decreased to avoid excessive anticoagulation and the risk of bleeding. Monitoring aPTT is crucial in adjusting heparin therapy to maintain it within the therapeutic range.
2. A client has a new prescription for Spironolactone. Which of the following findings should the nurse monitor as an adverse effect?
- A. Hyperkalemia
- B. Hypoglycemia
- C. Hypocalcemia
- D. Hyponatremia
Correct answer: A
Rationale: Corrected Rationale: Spironolactone is a potassium-sparing diuretic, which can lead to hyperkalemia as an adverse effect. Hyperkalemia can result in muscle weakness and cardiac dysrhythmias, making it essential for the nurse to monitor potassium levels closely when a client is on Spironolactone. Choice B, Hypoglycemia, is incorrect because Spironolactone is not known to cause low blood sugar levels. Choice C, Hypocalcemia, and Choice D, Hyponatremia, are also incorrect as Spironolactone is not associated with decreased levels of calcium or sodium.
3. A client has a new prescription for Losartan. Which of the following client statements indicates an understanding of the teaching?
- A. I will increase my intake of potassium-rich foods.
- B. I will take the medication with a full glass of milk.
- C. I should monitor my blood pressure weekly.
- D. I will take the medication every other day.
Correct answer: C
Rationale: The correct answer is C: 'I should monitor my blood pressure weekly.' Monitoring blood pressure regularly is crucial for clients taking Losartan, an angiotensin II receptor blocker, to ensure effective management of hypertension. This medication works to dilate blood vessels, lowering blood pressure, so monitoring is essential to assess its effectiveness. Choices A, B, and D are incorrect because increasing potassium-rich foods can be harmful due to the potassium-sparing effect of Losartan, taking the medication with milk is not recommended, and adherence to the prescribed daily dosing schedule is necessary for optimal therapeutic outcomes.
4. A client has a new prescription for Metoprolol to treat hypertension. Which of the following instructions should the nurse include?
- A. Stop taking the medication if your heart rate is below 70/min.
- B. Take the medication with food.
- C. Avoid sudden changes in position.
- D. Increase your fluid intake while taking this medication.
Correct answer: C
Rationale: The correct instruction for a client starting Metoprolol is to avoid sudden changes in position. Metoprolol can cause orthostatic hypotension, leading to dizziness and falls if the client changes positions quickly. By advising the client to make position changes slowly, the nurse helps prevent these adverse effects and promotes safety.
5. A healthcare professional is preparing to administer vancomycin 1 g by intermittent IV bolus. Available is vancomycin 1 g in 100 mL of dextrose 5% in water (D5W) to infuse over 45 min. The drop factor of the manual IV tubing is 10 gtt/mL. How many gtt/min should the healthcare professional adjust the manual IV infusion to deliver?
- A. 22 gtt/min
- B. 24 gtt/min
- C. 20 gtt/min
- D. 18 gtt/min
Correct answer: A
Rationale: To calculate the flow rate, use the formula: (Volume in mL x Drop factor) / Time in minutes = Flow rate in gtt/min. In this case, (100 mL x 10 gtt/mL) / 45 min = 22 gtt/min. Thus, the healthcare professional should adjust the manual IV infusion to deliver 22 gtt/min. Choice B, 24 gtt/min, is incorrect because it miscalculates the flow rate. Choices C and D, 20 gtt/min and 18 gtt/min, are also incorrect as they do not accurately calculate the flow rate based on the given information.
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