ATI RN
ATI Pharmacology
1. A patient is prescribed acetaminophen 650 mg PO every 6 hr PRN for pain. The available acetaminophen liquid is 500 mg/5 mL. How many mL should the nurse administer per dose?
- A. 6.5 mL
- B. 7 mL
- C. 5 mL
- D. 8 mL
Correct answer: A
Rationale: To calculate the volume to administer: (Desired dose / Concentration) = Volume to administer. In this case, (650 mg / 500 mg) x 5 mL = 6.5 mL. Therefore, the nurse should administer 6.5 mL of acetaminophen liquid per dose to provide the prescribed 650 mg of acetaminophen. Choice B, 7 mL, is incorrect because the correct calculation results in 6.5 mL. Choice C, 5 mL, is incorrect as it is the concentration of the acetaminophen liquid, not the final volume needed. Choice D, 8 mL, is incorrect because it does not reflect the accurate calculation based on the prescription and concentration.
2. What is a common side effect that typically occurs with the initial therapy of Nitroglycerine as a result of increased vasodilation?
- A. Abdominal cramps
- B. Calf pain
- C. Headache
- D. Blurred vision
Correct answer: C
Rationale: Headache is a common side effect associated with the initial therapy of Nitroglycerine due to its vasodilatory properties. The vasodilation caused by Nitroglycerine leads to relaxation of blood vessels, including those in the head, which can result in headaches. This side effect is considered normal and is often transient, diminishing with continued use of the medication.
3. A client has a new prescription for Lisinopril. Which of the following instructions should the nurse include?
- A. Avoid salt substitutes.
- B. Take this medication at bedtime.
- C. Increase your intake of potassium-rich foods.
- D. Take this medication with food.
Correct answer: A
Rationale: The correct instruction for a client prescribed Lisinopril is to avoid salt substitutes. Lisinopril, an ACE inhibitor, can lead to hyperkalemia, hence the importance of avoiding salt substitutes that may contain potassium. Instructing the client to avoid salt substitutes helps prevent potential adverse effects of increased potassium levels.
4. A client is starting therapy with Metformin. Which of the following instructions should the nurse include?
- A. Take this medication with your first bite of food.
- B. Take this medication on an empty stomach.
- C. Take this medication before bedtime.
- D. Take this medication every other day.
Correct answer: A
Rationale: Metformin should be taken with meals to reduce gastrointestinal side effects and ensure better absorption. Instructing the client to take the medication with the first bite of food helps in achieving optimal effectiveness and minimizes the risk of side effects like nausea or upset stomach. Choice B is incorrect because taking Metformin on an empty stomach can lead to increased gastrointestinal side effects. Choice C is incorrect as there is no specific timing requirement for taking Metformin before bedtime. Choice D is incorrect as Metformin is usually taken daily, not every other day.
5. A client reports taking Phenylephrine nasal drops for the past 10 days for Sinusitis. The nurse should assess the client for which of the following adverse effects of this medication?
- A. Sedation
- B. Nasal congestion
- C. Productive cough
- D. Constipation
Correct answer: B
Rationale: The correct answer is B: Nasal congestion. When used for more than 5 days, nasal sympathomimetic medications like phenylephrine can lead to rebound nasal congestion, which is an adverse effect to be assessed in the client. Sedation (choice A) is not a common adverse effect of phenylephrine. Productive cough (choice C) and constipation (choice D) are also not typical adverse effects associated with phenylephrine use.
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