ATI RN
ATI Pharmacology Proctored Exam 2024
1. A staff educator is reviewing medication dosages and factors that influence medication metabolism with a group of nurses at an in-service presentation. Which of the following factors should the educator include as a reason to administer lower medication dosages? (Select all that apply.)
- A. Increased renal secretion
- B. Increased medication-metabolizing enzymes
- C. Liver failure
- D. Peripheral vascular disease
Correct answer: C
Rationale: Liver failure impairs metabolism, leading to increased medication concentrations. When liver function is compromised, lower dosages are necessary to prevent adverse effects. Increased renal secretion is not a reason for lower medication dosages, as it primarily affects excretion rather than metabolism. Increased medication-metabolizing enzymes would usually require higher dosages to achieve the desired effect. Peripheral vascular disease does not directly impact medication metabolism or dosage requirements.
2. A client with HIV-1 infection is prescribed zidovudine as part of antiretroviral therapy. The nurse should monitor the client for which of the following adverse effects of this medication?
- A. Cardiac dysrhythmia
- B. Metabolic alkalosis
- C. Renal failure
- D. Aplastic anemia
Correct answer: D
Rationale: Corrected Rationale: Zidovudine is associated with the development of aplastic anemia, a serious adverse effect characterized by bone marrow suppression. Regular monitoring is essential to detect this side effect early and prevent complications. Cardiac dysrhythmia, metabolic alkalosis, and renal failure are not commonly associated with zidovudine use, making them incorrect choices for adverse effects of this medication.
3. A client is being educated by a healthcare provider about Terbutaline. Which of the following statements by the client indicates understanding of the teaching?
- A. This medication will stop my contractions.
- B. This medication will prevent vaginal bleeding.
- C. This medication will promote blood flow to my baby.
- D. This medication will increase my prostaglandin production.
Correct answer: A
Rationale: The correct answer is A. Terbutaline works by blocking beta2-adrenergic receptors, leading to uterine smooth muscle relaxation and stopping contractions. It is commonly used to delay preterm labor. Choice B is incorrect because Terbutaline is not used to prevent vaginal bleeding. Choice C is incorrect because Terbutaline's primary action is not related to promoting blood flow to the baby. Choice D is incorrect because Terbutaline does not increase prostaglandin production; instead, it works by blocking beta2-adrenergic receptors.
4. When administering Phenytoin, what should you monitor?
- A. Behavior
- B. Therapeutic blood levels
- C. For signs of Stevens-Johnson syndrome
- D. All of the above
Correct answer: D
Rationale: When administering Phenytoin, monitoring the patient's behavior is important to assess for any changes that may indicate adverse effects. Monitoring therapeutic blood levels helps ensure the medication is within the effective range and not causing toxicity. Additionally, being vigilant for signs of Stevens-Johnson syndrome, a severe skin reaction associated with Phenytoin use, is crucial for early detection and intervention. Therefore, monitoring behavior, therapeutic blood levels, and for signs of Stevens-Johnson syndrome are all essential when administering Phenytoin.
5. When does regular insulin typically peak?
- A. 30 minutes to 2 ½ hours
- B. 1 to 3 hours
- C. 6 to 14 hours
- D. 1 to 5 hours
Correct answer: D
Rationale: Regular insulin usually peaks around 1 to 5 hours after administration. This peak time frame is important to consider when managing blood glucose levels and timing meals to coincide with insulin activity. Choice A, '30 minutes to 2 ½ hours,' is incorrect because regular insulin typically peaks later. Choice B, '1 to 3 hours,' is not the most accurate as the peak for regular insulin can extend beyond 3 hours. Choice C, '6 to 14 hours,' is incorrect as this timeframe is more indicative of long-acting insulins, not regular insulin.
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