ATI RN
ATI Pharmacology Proctored Exam 2023
1. A healthcare professional is preparing to administer heparin 15,000 units subcutaneously every 12 hours. The available heparin injection is 20,000 units/mL. How many milliliters should the healthcare professional administer per dose?
- A. 0.8 mL
- B. 0.75 mL
- C. 0.5 mL
- D. 1 mL
Correct answer: A
Rationale: To calculate the volume to administer, use the formula: Desired dose / Concentration = Volume to administer. In this case, (15,000 units / 20,000 units/mL) = 0.75 mL. Since the volume needs to be rounded up to the nearest tenth, the correct answer is 0.8 mL. Choice B (0.75 mL) is incorrect because it does not account for rounding up the volume. Choices C (0.5 mL) and D (1 mL) are incorrect as they do not reflect the precise calculation based on the given concentration and desired dose.
2. A client has a new prescription for Valproic Acid. The client should be informed that which of the following laboratory tests need to be completed periodically? (Select all that apply.)
- A. Thrombocyte count.
- B. Hematocrit.
- C. Amylase.
- D. Liver function tests.
Correct answer: A
Rationale: Valproic acid can lead to thrombocytopenia, making it essential to monitor the client's thrombocyte count periodically. Additionally, valproic acid can cause pancreatitis, necessitating the monitoring of amylase levels. Furthermore, valproic acid carries a risk of hepatotoxicity, requiring regular monitoring of liver function tests.
3. A client has a new prescription for Maraviroc to treat HIV infection. The healthcare provider should monitor the client for which of the following adverse reactions?
- A. Liver failure
- B. Kidney failure
- C. Pancreatitis
- D. Severe allergic reactions
Correct answer: D
Rationale: The correct answer is D: Severe allergic reactions. Maraviroc, used to treat HIV infection, can lead to severe allergic reactions, including hepatotoxicity. While liver failure is a potential adverse effect, it is often preceded by hepatotoxicity manifestations like jaundice or right upper quadrant pain. Kidney failure and pancreatitis are not typically associated with Maraviroc use. Therefore, monitoring for signs of severe allergic reactions and hepatotoxicity is crucial for early detection and intervention.
4. A client is being discharged with a new prescription for Atenolol. Which of the following instructions should the nurse include?
- A. Take this medication in the morning.
- B. Monitor your heart rate regularly.
- C. Avoid consuming foods high in potassium.
- D. Increase your fluid intake.
Correct answer: B
Rationale: The correct answer is B: 'Monitor your heart rate regularly.' Atenolol is a beta-blocker that can cause bradycardia (slow heart rate). Monitoring the heart rate regularly is crucial to promptly detect any significant decreases. This allows for timely intervention and adjustment of the medication regimen if needed, helping to prevent adverse effects associated with bradycardia. Choices A, C, and D are incorrect. Instructing the client to take the medication in the morning does not address the need for heart rate monitoring. Avoiding foods high in potassium is more relevant for medications like ACE inhibitors or potassium-sparing diuretics. Increasing fluid intake is not directly related to the use of Atenolol.
5. A client is receiving daily doses of Oprelvekin. Which of the following laboratory values should the nurse monitor to determine the effectiveness of this medication?
- A. Hemoglobin
- B. Absolute neutrophil count
- C. Platelet count
- D. Total white blood cell count
Correct answer: C
Rationale: The nurse should monitor the platelet count to determine the effectiveness of Oprelvekin. The expected outcome for this medication is a platelet count greater than 50,000/mm^3. Oprelvekin is a medication used to stimulate platelet production, making platelet count a crucial parameter to assess its effectiveness. Monitoring hemoglobin, absolute neutrophil count, or total white blood cell count is not specifically related to the action or effectiveness of Oprelvekin.
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