ATI RN
ATI Proctored Pharmacology 2023
1. When administering medications to a 4-month-old infant, which of the following pharmacokinetic principles should be considered? (Select all that apply.)
- A. Infants have a more rapid gastric emptying time.
- B. Infants have immature liver function.
- C. Infants' blood-brain barrier is poorly developed.
- D. Infants have an increased ability to absorb topical medications.
Correct answer: B
Rationale: When administering medications to a 4-month-old infant, the pharmacokinetic principle to consider is that infants have immature liver function until 1 year of age. This requires medications metabolized by the liver to be administered in smaller dosages. While infants do have a more rapid gastric emptying time, immature liver function is a more critical pharmacokinetic consideration in this context. Additionally, although infants have a poorly developed blood-brain barrier, this relates more to pharmacodynamic effects rather than pharmacokinetic principles. The statement about infants having an increased ability to absorb topical medications is not directly related to pharmacokinetic principles, making choice B the correct answer.
2. A client has a new prescription for Labetalol. Which of the following instructions should be included?
- A. Take this medication at bedtime.
- B. Avoid sudden discontinuation of the medication.
- C. Increase your intake of sodium-rich foods.
- D. Avoid drinking grapefruit juice.
Correct answer: B
Rationale: The correct answer is to instruct the client to avoid sudden discontinuation of Labetalol. Abrupt discontinuation of beta-blockers like Labetalol can lead to rebound hypertension and other cardiac issues. It is important for clients to taper off the medication under healthcare provider guidance to prevent potential complications.
3. When caring for a client prescribed warfarin, which laboratory test should the nurse monitor to evaluate the therapeutic effect of the medication?
- A. aPTT
- B. Platelet count
- C. BUN
- D. PT/INR
Correct answer: D
Rationale: The correct laboratory test to monitor the therapeutic effect of warfarin is the PT/INR. Warfarin affects blood clotting, and the PT/INR levels indicate the effectiveness of the medication in preventing clot formation. Therefore, monitoring PT/INR levels helps ensure that the client is within the therapeutic range and is protected from potential complications related to clotting. Choice A (aPTT) is incorrect because while it measures the clotting time, it is not the preferred test for monitoring warfarin therapy. Choice B (Platelet count) is incorrect as it assesses the number of platelets and not the medication's therapeutic effect. Choice C (BUN) is unrelated to monitoring the effects of warfarin therapy and is primarily used to assess kidney function.
4. A healthcare provider is caring for a 4-year-old child who is resistant to taking medication. Which of the following strategies should the healthcare provider use to elicit the child's cooperation?
- A. Offer the child a choice of taking the medication with juice or water
- B. Tell the child it is candy
- C. Hide the medication in a large dish of ice cream
- D. Tell the child they will have a shot instead
Correct answer: A
Rationale: Offering children choices empowers them and can help in gaining cooperation, especially when it comes to taking medications. By providing options like taking the medication with juice or water, the child feels a sense of control and may be more willing to cooperate. This approach respects the child's autonomy and can make the experience more positive for both the child and the healthcare provider. Choices B, C, and D are not ideal strategies as they involve deception or coercion, which can lead to distrust and make the child more resistant to taking medication in the future.
5. A client is starting a new prescription for enalapril. Which of the following instructions should the nurse include?
- A. Take the medication with food.
- B. Rise slowly from a sitting position.
- C. Avoid salt substitutes.
- D. Avoid exposure to sunlight.
Correct answer: C
Rationale: The correct instruction for a client starting enalapril is to avoid salt substitutes. Salt substitutes may contain potassium, which could lead to elevated potassium levels when combined with enalapril, increasing the risk of hyperkalemia. Choices A, B, and D are incorrect because there is no specific need to take enalapril with food, rise slowly from a sitting position, or avoid exposure to sunlight when taking this medication.
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