ATI RN
ATI Pharmacology Test Bank
1. 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.
2. A client has been prescribed Atorvastatin to lower cholesterol. Which of the following instructions should the nurse include?
- A. Take this medication with a full glass of water.
- B. Report any muscle pain to your provider immediately.
- C. Avoid drinking grapefruit juice while taking this medication.
- D. Take this medication at bedtime to prevent drowsiness.
Correct answer: B
Rationale: The correct instruction for the nurse to include is to 'Report any muscle pain to your provider immediately.' Muscle pain can be a sign of rhabdomyolysis, a rare but serious side effect of statins like atorvastatin. It is crucial to monitor for potential complications, and reporting muscle pain promptly can lead to timely intervention if needed. Choices A, C, and D are incorrect because they do not address a critical side effect of atorvastatin or provide essential information for the client's safety and well-being.
3. During transfusion of a unit of whole blood, a nurse is assessing a client who develops a cough, shortness of breath, elevated blood pressure, and distended neck veins. The nurse should anticipate a prescription for which of the following medications?
- A. Epinephrine
- B. Lorazepam
- C. Furosemide
- D. Diphenhydramine
Correct answer: C
Rationale: The client's symptoms indicate circulatory overload, which can occur during blood transfusions. Furosemide, a loop diuretic, is commonly prescribed in such cases to help relieve manifestations of circulatory overload by promoting diuresis and reducing fluid volume. Epinephrine is used for severe allergic reactions, lorazepam for anxiety or seizures, and diphenhydramine for mild allergic reactions or as a sedative. Therefore, the correct choice is Furosemide (C) to manage circulatory overload during a blood transfusion.
4. A client with increased intracranial pressure is receiving Mannitol. Which finding should the nurse report to the provider?
- A. Blood glucose 150 mg/dL
- B. Urine output 40 mL/hr
- C. Dyspnea
- D. Bilateral equal pupil size
Correct answer: C
Rationale: The correct answer is C: Dyspnea. Dyspnea is a concerning finding in a client receiving Mannitol as it can be a manifestation of heart failure, which is an adverse effect of the medication. The nurse should promptly notify the provider, discontinue the Mannitol, and initiate appropriate interventions to address the dyspnea and monitor the client's condition closely. Choice A, Blood glucose of 150 mg/dL, is within normal limits and not directly related to Mannitol administration. Choice B, Urine output of 40 mL/hr, could indicate decreased renal perfusion, but it is not the most critical finding compared to dyspnea. Choice D, Bilateral equal pupil size, is a normal neurological finding and not directly related to Mannitol therapy.
5. A client has a new prescription for Labetalol. Which of the following instructions should the nurse include?
- A. Take this medication at bedtime.
- B. Avoid sudden discontinuation of the medication.
- C. Increase your intake of sodium-rich foods.
- D. Avoid drinking grapefruit juice.
Correct answer: B
Rationale: The correct instruction for a client on Labetalol is to avoid sudden discontinuation of the medication. Labetalol is a beta-blocker that, if abruptly stopped, can lead to rebound hypertension and other cardiac issues. It is essential for patients to taper off this medication under medical supervision to prevent adverse effects.
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