ATI RN
ATI Pharmacology Proctored Exam 2019
1. A client has a new prescription for Phenytoin. Which of the following instructions should the nurse include?
- A. Brush and floss your teeth regularly.
- B. Avoid drinking grapefruit juice.
- C. Take this medication with food.
- D. Increase your intake of calcium-rich foods.
Correct answer: A
Rationale: The correct answer is to instruct the client to brush and floss their teeth regularly. Phenytoin can lead to gingival hyperplasia, making oral hygiene crucial to prevent complications. Encouraging good oral care practices helps reduce the risk of adverse effects on the gums and teeth. Avoiding grapefruit juice is not specifically related to Phenytoin. While some medications require intake with food, Phenytoin is usually taken on an empty stomach for better absorption. Increasing calcium-rich foods is not directly associated with Phenytoin therapy.
2. What is the therapeutic use of Phenytoin?
- A. Replacement in hypothyroidism to restore normal hormonal balance
- B. Diminished accumulation of acid in the gastric lumen with lessened gastroesophageal reflux
- C. Diminished seizure activity, termination of ventricular arrhythmias
- D. Prevention of thrombus formation, prevention of extension of existing thrombi
Correct answer: C
Rationale: Phenytoin is primarily used to diminish seizure activity and is effective in terminating ventricular arrhythmias. It works by stabilizing neuronal membranes, reducing repetitive neuronal firing, and limiting the spread of seizure activity in the brain. While phenytoin does not have a direct role in preventing thrombus formation or extending existing thrombi, it is crucial in managing seizures and certain arrhythmias.
3. What is a severe adverse effect of iron supplementation?
- A. Seizures
- B. Dry mouth
- C. Edema
- D. Serotonin syndrome
Correct answer: A
Rationale: A severe adverse effect of iron supplementation is seizures. Iron toxicity can lead to symptoms such as abdominal pain, vomiting, bloody diarrhea, lethargy, and in severe cases, seizures. It is important for individuals taking iron supplements to follow recommended dosages to prevent adverse effects.
4. When teaching a client with a new prescription for Simvastatin, which instruction should be included?
- A. Take this medication with food.
- B. Avoid drinking grapefruit juice.
- C. Take this medication in the morning.
- D. Increase your intake of potassium-rich foods.
Correct answer: B
Rationale: The correct instruction for a client with a new prescription for Simvastatin is to avoid drinking grapefruit juice. Grapefruit juice can inhibit the metabolism of Simvastatin, leading to increased blood levels of the drug and a higher risk of adverse effects such as muscle pain and liver damage. It is important to educate the client about this potential interaction to ensure the safe and effective use of the medication. Choices A, C, and D are incorrect because taking Simvastatin with food or in the morning and increasing potassium-rich foods intake are not specifically related to the safe use of Simvastatin. Avoiding grapefruit juice is crucial to prevent drug interactions.
5. A client has a new prescription for Oxycodone/Acetaminophen, and the nurse is providing discharge instructions. Which of the following instructions should the nurse include?
- A. Take the medication on an empty stomach.
- B. Avoid taking additional Acetaminophen while on this medication.
- C. Increase your intake of fiber while on this medication.
- D. Avoid taking the medication before bedtime.
Correct answer: B
Rationale: The correct instruction for a client with a prescription for Oxycodone/Acetaminophen is to avoid taking additional Acetaminophen while on this medication. Combining medications containing Acetaminophen can lead to exceeding the maximum recommended dose and increase the risk of liver toxicity. Therefore, it is crucial for the nurse to emphasize the importance of not taking extra Acetaminophen while on this prescription to ensure the client's safety and well-being. Choices A, C, and D are incorrect. Taking Oxycodone/Acetaminophen on an empty stomach is not necessary; increasing fiber intake is not directly related to this medication, and avoiding taking the medication before bedtime is not a specific concern associated with this prescription.
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