a nurse is preparing to administer medications to a 4 month old infant which of the following pharmacokinetic principles should the nurse consider whe
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Nursing Elites

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.)

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 is receiving IV Dopamine for the treatment of shock. Which of the following findings indicates that the medication is effective?

Correct answer: C

Rationale: The correct answer is increased urine output. Dopamine increases cardiac output and improves renal perfusion, leading to increased urine output. This response indicates that the medication is effective in treating shock by enhancing renal function and perfusion. Choices A, B, and D are incorrect because an increased heart rate, decreased blood pressure, and decreased respiratory rate are not findings that indicate the effectiveness of IV Dopamine in treating shock.

3. While teaching a client starting therapy with rituximab, which of the following findings should the nurse instruct the client to report?

Correct answer: B

Rationale: The correct answer is B: Fever. The nurse should instruct the client to report fever as it can be an indication of an infection, which is a potential complication of rituximab therapy. Monitoring for fever is crucial to promptly address any signs of infection and ensure the client's safety during treatment. Choices A, C, and D are not typically associated with rituximab therapy and are less likely to be directly related to a serious complication requiring immediate attention.

4. A client has a new prescription for Albuterol and Beclomethasone inhalers for the control of asthma. Which of the following instructions should the nurse include in the teaching?

Correct answer: B

Rationale: When a client is prescribed an inhaled beta2-agonist (such as albuterol) and an inhaled glucocorticoid (such as beclomethasone) for asthma control, the beta2-agonist should be administered first. Administering the beta2-agonist before the glucocorticoid helps promote bronchodilation and enhances the absorption of the glucocorticoid, maximizing its effectiveness in the lungs. Choice A is incorrect because albuterol is usually taken as needed for quick relief of asthma symptoms and not necessarily at the same time each day. Choice C is incorrect as beclomethasone is a controller medication used for long-term asthma management, not for acute episodes. Choice D is incorrect as shaking the beclomethasone inhaler before use helps ensure proper medication dispersion for effective inhalation.

5. Phenytoin is an antiarrhythmic and anticonvulsant that has an unlabeled use for:

Correct answer: C

Rationale: Phenytoin, an antiarrhythmic and anticonvulsant medication, is also used off-label for treating neuropathic pain. While its primary indications are for managing heart rhythm disorders and seizures, it has shown efficacy in managing neuropathic pain, expanding its clinical utility. Choices A, B, and D are incorrect as phenytoin is not commonly used for headaches, cold remedies, or antianxiety purposes.

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