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 is receiving Cefotaxime IV for a severe infection. Which finding indicates a potentially serious adverse reaction to this medication that the nurse should report to the provider?
- A. Diaphoresis
- B. Epistaxis
- C. Diarrhea
- D. Alopecia
Correct answer: C
Rationale: Diarrhea is an adverse effect of cefotaxime and other cephalosporins that requires reporting to the provider. Severe diarrhea might indicate the client has developed antibiotic-associated pseudomembranous colitis, which could be life-threatening. Diaphoresis, epistaxis, and alopecia are not typically associated with cefotaxime use and are less likely to indicate a serious adverse reaction necessitating immediate reporting.
3. Which of the following drugs is associated with hepatitis as a reaction?
- A. Valproic acid
- B. Quinidine
- C. Isoniazid
- D. Ethosuximide
Correct answer: C
Rationale: Hepatitis is a known side effect of isoniazid. It is important to monitor patients on isoniazid for signs of liver damage, including hepatitis, as part of their treatment regimen for tuberculosis.
4. A client is taking Paroxetine to treat PTSD and reports teeth grinding at night. Which interventions should the nurse implement to manage Bruxism? (Select all that apply.)
- A. Concurrent administration of buspirone.
- B. Administration of a different SSRI.
- C. Use of a mouth guard.
- D. Changing to a different class of antidepressant medication.
Correct answer: A
Rationale: The correct interventions to manage Bruxism associated with Paroxetine use include A: Concurrent administration of buspirone. Buspirone can help alleviate the side effect of Bruxism. Additionally, C: Use of a mouth guard is recommended to prevent oral damage from teeth grinding. B: Administration of a different SSRI is not necessary since the issue is specific to Paroxetine. D: Changing to a different class of antidepressant medication may be considered in severe cases, but the initial step should be to add buspirone to address the Bruxism caused by Paroxetine.
5. When completing a nursing history for a client taking Simvastatin, which of the following disorders should the nurse identify as a contraindication to adding Ezetimibe to the client's medications?
- A. History of severe constipation
- B. History of hypertension
- C. Active hepatitis C
- D. Type 2 diabetes mellitus
Correct answer: C
Rationale: Ezetimibe is contraindicated in clients with active moderate-to-severe liver disorders, particularly if they are already on a statin like simvastatin. Hepatitis C is a liver condition that can be exacerbated by Ezetimibe, leading to potential complications. Therefore, the nurse should identify active hepatitis C as a contraindication to adding Ezetimibe to the client's medications. Choices A, B, and D are incorrect because they are not directly related to the contraindication of Ezetimibe in clients taking Simvastatin.
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