ATI RN
ATI Pharmacology Proctored Exam 2023
1. A client in an acute care facility is receiving IV Nitroprusside for hypertensive crisis. The nurse should monitor the client for which of the following adverse reactions to this medication?
- A. Intestinal ileus
- B. Neutropenia
- C. Delirium
- D. Hyperthermia
Correct answer: C
Rationale: The correct answer is C: Delirium. When IV nitroprusside is administered at high dosages, it can lead to thiocyanate toxicity, resulting in mental status changes such as delirium. Monitoring thiocyanate levels during therapy is crucial to ensure they remain below 10 mg/dL to prevent this adverse reaction. Choices A, B, and D are incorrect because nitroprusside does not typically cause intestinal ileus, neutropenia, or hyperthermia as adverse reactions.
2. 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.
3. A patient is receiving IV heparin for a deep-vein thrombosis and begins vomiting blood. After the heparin has been stopped, which of the following medications should the nurse prepare to administer?
- A. Vitamin K1
- B. Atropine
- C. Protamine
- D. Calcium gluconate
Correct answer: C
Rationale: Protamine is the antidote for heparin, as it reverses its anticoagulant effects. In cases of heparin overdose or if there is excessive bleeding, administering protamine can quickly neutralize the effects of heparin, helping to prevent further bleeding complications.
4. 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.
5. A client in a long-term care facility has Hypothyroidism and a new prescription for Levothyroxine. Which of the following dosage schedules should the nurse expect for this client?
- A. The client will start at a high dose, and the dose will be tapered as needed.
- B. The client will remain on the initial dosage during the course of treatment.
- C. The client's dosage will be adjusted daily based on blood levels.
- D. The client will start on a low dose, which will be gradually increased.
Correct answer: D
Rationale: Levothyroxine should be initiated at a low dose and titrated gradually over several weeks to achieve therapeutic levels. This approach helps to minimize the risk of adverse effects, particularly in older adult clients who may be more sensitive to medication changes. Starting at a low dose allows for close monitoring of the client's response and adjustment of the dosage as needed to optimize treatment outcomes. Choice A is incorrect because starting at a high dose can increase the risk of adverse effects and is not the recommended approach. Choice B is incorrect because maintaining the initial dosage throughout the treatment may not achieve optimal therapeutic levels. Choice C is incorrect because adjusting the dosage daily based on blood levels is not the standard practice for initiating Levothyroxine treatment.
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