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, 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.
2. A client's plasma Lithium level is 2.1 mEq/L. Which of the following is an appropriate action by the nurse?
- A. Perform immediate gastric lavage.
- B. Prepare the client for hemodialysis.
- C. Administer an additional oral dose of lithium.
- D. Request a stat repeat of the laboratory test.
Correct answer: A
Rationale: In a client with a plasma lithium level of 2.1 mEq/L, immediate gastric lavage is appropriate for severe toxicity. Gastric lavage can help lower the client's lithium level by removing the unabsorbed lithium from the stomach.
3. A healthcare provider is caring for a client who has a new prescription for Digoxin. Which of the following findings should the healthcare provider identify as a potential sign of Digoxin toxicity?
- A. Nausea
- B. Dry mouth
- C. Hypoglycemia
- D. Tinnitus
Correct answer: A
Rationale: Nausea is a potential sign of Digoxin toxicity. Along with vomiting, visual disturbances, and confusion, it can be an early indication of an overdose. Dry mouth is not typically associated with Digoxin toxicity. Hypoglycemia is a low blood sugar level and is not directly related to Digoxin toxicity. Tinnitus, a ringing in the ears, is not a common sign of Digoxin toxicity. Healthcare providers should closely monitor clients on Digoxin for symptoms like nausea to prevent serious complications.
4. A client has a new prescription for rituximab. Which of the following findings should the nurse instruct the client to report?
- A. Dizziness
- B. Fever
- C. Urinary frequency
- D. Dry mouth
Correct answer: B
Rationale: The correct answer is B: Fever. The nurse should instruct the client to report fever as it can be an indication of an infection, which is a potential complication of rituximab therapy. Monitoring for fever is crucial to detect early signs of infection and prevent complications. Dizziness (choice A), urinary frequency (choice C), and dry mouth (choice D) are not typically associated with rituximab therapy and are not the primary concerns that the nurse needs to address with the client.
5. A client with heart failure is prescribed digoxin. Which statement by the client indicates an adverse effect of the medication?
- A. I can walk a mile a day.
- B. I've had a backache for several days.
- C. I am urinating more frequently.
- D. I feel nauseated and have no appetite.
Correct answer: D
Rationale: Nausea and loss of appetite are common early signs of digoxin toxicity, indicating an adverse effect of the medication. These symptoms should be reported to the healthcare provider immediately for further evaluation and management.
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