HESI RN
Pharmacology HESI Quizlet
1. The client has a PRN prescription for loperamide hydrochloride (Imodium). The nurse understands that this medication is used for which condition?
- A. Constipation
- B. Abdominal pain
- C. An episode of diarrhea
- D. Hematest-positive nasogastric tube drainage
Correct answer: C
Rationale: Loperamide hydrochloride (Imodium) is an antidiarrheal medication commonly used to manage episodes of diarrhea. It works by slowing down gut movement and reducing the frequency of bowel movements. Loperamide is not indicated for constipation, abdominal pain, or hematest-positive nasogastric tube drainage. It is specifically useful in acute and chronic diarrhea, such as in cases of inflammatory bowel disease, to help control symptoms and decrease fluid loss.
2. Before initiating a client with tuberculosis on anti-tuberculosis therapy with isoniazid (INH), a nurse ensures that which of the following baseline study has been completed?
- A. Electrolyte levels
- B. Coagulation times
- C. Liver enzyme levels
- D. Serum creatinine level
Correct answer: C
Rationale: Before starting INH therapy for tuberculosis, it is essential to assess liver enzyme levels as INH can cause hepatotoxicity. Monitoring liver enzyme levels before and during the initial 3 months of therapy is crucial to detect any liver damage early and prevent further complications. Choice A, electrolyte levels, are not directly impacted by INH therapy. Choice B, coagulation times, are not routinely monitored before starting INH therapy. Choice D, serum creatinine level, is not specifically required as a baseline study before initiating INH therapy for tuberculosis.
3. Heparin sodium is prescribed for the client. The nurse expects that the healthcare provider will prescribe which of the following to monitor for a therapeutic effect of the medication?
- A. Hematocrit level
- B. Hemoglobin level
- C. Prothrombin time (PT)
- D. Activated partial thromboplastin time (aPTT)
Correct answer: D
Rationale: The correct answer is D, activated partial thromboplastin time (aPTT). Heparin affects the intrinsic pathway of coagulation. Monitoring aPTT helps ensure that heparin sodium is within the therapeutic range to prevent clot formation. Hematocrit and hemoglobin levels assess red blood cell concentrations and are not specific to monitoring heparin therapy. Prothrombin time (PT) is used to monitor the therapeutic effect of warfarin sodium, which affects the extrinsic pathway of coagulation, not heparin.
4. A client has begun therapy with theophylline (Theo-24). The nurse tells the client to limit the intake of which of the following while taking this medication?
- A. Oranges and pineapple
- B. Coffee, cola, and chocolate
- C. Oysters, lobster, and shrimp
- D. Cottage cheese, cream cheese, and dairy creamers
Correct answer: B
Rationale: Theophylline is a xanthine bronchodilator. Xanthines are found in coffee, cola, and chocolate. These foods should be limited while taking theophylline to prevent potential drug interactions or adverse effects.
5. A client taking fexofenadine (Allegra) is scheduled for allergy skin testing and tells the nurse in the healthcare provider's office that a dose was taken this morning. The nurse determines that:
- A. The client should reschedule the appointment.
- B. A lower dose of allergen will need to be injected.
- C. A higher dose of allergen will need to be injected.
- D. The client should have the skin test read a day later than usual.
Correct answer: A
Rationale: Fexofenadine, an antihistamine, can cause false-negative readings in allergy skin testing and should be discontinued 3 days prior. Therefore, the client should reschedule the appointment to ensure accurate test results.
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