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 healthcare professional is preparing to administer Haloperidol 2 mg PO every 12 hr. The available dosage is haloperidol 1 mg/tablet. How many tablets should the healthcare professional administer?
- A. 1 tablet
- B. 2 tablets
- C. 3 tablets
- D. 4 tablets
Correct answer: B
Rationale: To determine the number of tablets needed, divide the desired dose by the dose per tablet. In this case, (2 mg / 1 mg/tablet) = 2 tablets required to administer the prescribed dose of Haloperidol.
3. A healthcare professional is preparing to administer vancomycin to a client. The professional should monitor for which of the following adverse effects?
- A. Nephrotoxicity
- B. Hepatotoxicity
- C. Red Man Syndrome
- D. Diarrhea
Correct answer: C
Rationale: Red Man Syndrome is a common adverse effect of vancomycin characterized by flushing and rash. It is not related to nephrotoxicity, hepatotoxicity, or diarrhea. Monitoring for this reaction allows for prompt intervention to prevent severe complications.
4. 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.
5. A nurse is teaching a client who has breast cancer about the adverse effects of chemotherapy. Which of the following statements should the nurse include?
- A. You should use a soft-bristled toothbrush to prevent bleeding.'
- B. You should take aspirin for minor aches and pains.'
- C. You should avoid contact with individuals who recently received live virus vaccines.'
- D. You should consume a diet low in protein to reduce the risk of renal damage.'
Correct answer: A
Rationale: The nurse should instruct the client to use a soft-bristled toothbrush to prevent bleeding, which can occur due to chemotherapy-induced thrombocytopenia.
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