ATI RN
ATI Pharmacology Proctored Exam
1. A provider prescribes phenobarbital for a client who has a seizure disorder. The medication has a long half-life of 4 days. How many times per day should the nurse expect to administer this medication?
- A. One
- B. Two
- C. Three
- D. Four
Correct answer: A
Rationale: Phenobarbital has a long half-life of 4 days, meaning it remains at therapeutic levels in the body for an extended period. Due to this prolonged duration of action, the nurse should expect to administer phenobarbital once a day to maintain therapeutic levels and effectiveness. Administering it more than once a day would lead to unnecessary dosing and potential adverse effects as the medication remains active in the body for an extended period.
2. Which medication is contraindicated with Nitroglycerin?
- A. Hydrochloroquine
- B. Methylprednisolone
- C. Phenazopyridine
- D. Erectile dysfunction drugs
Correct answer: D
Rationale: The correct answer is D: Erectile dysfunction drugs. Erectile dysfunction drugs are contraindicated with Nitroglycerin because they can potentiate the hypotensive effects of Nitroglycerin, leading to severe hypotension. Choices A, B, and C are incorrect because they are not known to have significant interactions with Nitroglycerin.
3. 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.
4. A client has a prescription for Phenytoin. Which of the following instructions should the nurse include?
- A. Take this medication at bedtime.
- B. Increase your intake of calcium-rich foods.
- C. Brush and floss your teeth regularly.
- D. Avoid eating foods high in potassium.
Correct answer: C
Rationale: The correct answer is C: 'Brush and floss your teeth regularly.' Phenytoin can cause gingival hyperplasia, a condition that leads to overgrowth of gum tissue. Good oral hygiene practices such as regular brushing and flossing can help prevent or minimize this side effect. In contrast, choices A, B, and D are not directly related to managing the side effects of Phenytoin. Taking the medication at bedtime (choice A) is not a specific instruction related to oral hygiene. Increasing calcium-rich foods intake (choice B) may be beneficial for bone health but is not directly related to preventing gingival hyperplasia. Avoiding foods high in potassium (choice D) is not a necessary instruction for a client taking Phenytoin.
5. A healthcare professional is preparing to administer a dose of Hydromorphone IV to a client. Which of the following actions should the healthcare professional take?
- A. Administer the medication over 5 minutes.
- B. Administer a dose of Naloxone prior to giving the Hydromorphone.
- C. Assess the client's blood pressure prior to administration.
- D. Inject the medication into the client's subcutaneous tissue.
Correct answer: A
Rationale: The correct action for the healthcare professional preparing to administer IV Hydromorphone to a client is to administer the medication over 5 minutes. This slow administration is crucial to reduce the risk of hypotension and respiratory depression. Administering the medication rapidly can lead to adverse effects. Option B, administering Naloxone prior to Hydromorphone, is incorrect because Naloxone is used as an antidote for opioid overdose, not as a routine pre-medication. Option C, assessing the client's blood pressure before administration, is important but not the immediate action to take to reduce adverse effects of Hydromorphone. Option D, injecting the medication into the client's subcutaneous tissue, is incorrect as Hydromorphone is meant for intravenous administration for rapid onset of action.
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