ATI RN
ATI Pharmacology Proctored Exam
1. A client has a prescription for Nitroglycerin. Which of the following instructions should the nurse include?
- A. Take one tablet every 15 minutes until pain is relieved.
- B. Take one tablet every 5 minutes, up to three doses.
- C. Take one tablet at bedtime.
- D. Take one tablet on an empty stomach.
Correct answer: B
Rationale: The correct administration of Nitroglycerin involves taking one tablet at the onset of chest pain, then another tablet every 5 minutes for up to three doses. This protocol aims to relieve angina symptoms. Choice A is incorrect because waiting 15 minutes between doses may delay symptom relief. Choice C is incorrect as Nitroglycerin is not typically taken at bedtime but rather during angina episodes. Choice D is incorrect because Nitroglycerin is usually taken sublingually, so it doesn't need to be taken on an empty stomach.
2. A client has a prescription for Prednisone for the treatment of Rheumatoid Arthritis. Which of the following statements by the client indicates an understanding of the teaching?
- A. I will increase my intake of potassium-rich foods.
- B. I should take my medication with food.
- C. I will decrease my intake of calcium-rich foods.
- D. I should avoid eating grapefruit while taking this medication.
Correct answer: A
Rationale: The correct answer is A. Prednisone can cause hypokalemia, leading to low potassium levels. Increasing the intake of potassium-rich foods helps prevent this imbalance. Choices B, C, and D are incorrect because taking Prednisone with food, decreasing calcium-rich foods, or avoiding grapefruit are not specifically related to addressing the side effect of hypokalemia associated with Prednisone.
3. A healthcare professional is reviewing the medication list of a client who has a new prescription for Metformin to treat type 2 diabetes. Which of the following medications should the healthcare professional identify as placing the client at risk for lactic acidosis?
- A. Metformin
- B. Metoprolol
- C. Lisinopril
- D. Insulin
Correct answer: A
Rationale: Metformin is known to have a risk of causing lactic acidosis, particularly in clients with renal impairment or predisposing conditions. Lactic acidosis is a rare but serious adverse effect of metformin use that can be life-threatening. Metoprolol, Lisinopril, and Insulin do not have a known association with lactic acidosis. Healthcare professionals should monitor clients prescribed metformin carefully, especially those with risk factors, to detect and manage lactic acidosis promptly.
4. A client with end-stage cancer receiving Morphine is prescribed Methylnaltrexone. The client's daughter asks why the provider prescribed Methylnaltrexone. Which of the following responses should the nurse make?
- A. The medication will increase your mother's respirations.
- B. The medication will prevent dependence on the Morphine.
- C. The medication will relieve your mother's constipation.
- D. The medication works with the Morphine to increase pain relief.
Correct answer: C
Rationale: The correct response is C: 'The medication will relieve your mother's constipation.' Methylnaltrexone is an opioid antagonist used to treat severe constipation unrelieved by laxatives in opioid-dependent clients. It works by blocking the mu opioid receptors in the GI tract, which helps alleviate constipation without affecting pain relief or causing withdrawal symptoms. Choices A, B, and D are incorrect. Methylnaltrexone's primary action is related to managing constipation rather than increasing respirations, preventing dependence on Morphine, or enhancing pain relief when used alongside Morphine.
5. 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, with a long half-life of 4 days, remains at therapeutic levels in the body for an extended period. Due to this prolonged duration of action, the nurse should administer phenobarbital once a day to maintain a consistent therapeutic effect without the need for multiple daily doses. Administering the medication more than once a day would not be necessary and could increase the risk of side effects or toxicity. Therefore, the correct answer is to administer phenobarbital once a day.
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