HESI LPN
Pharmacology HESI Practice
1. A client who received a renal transplant three months ago is readmitted to the acute care unit with signs of graft rejection. While taking the client's history, the nurse determines the client has been self-administering St. John's wort, an herbal preparation, on the advice of a friend. What information is most significant about this finding?
- A. Wort can decrease plasma concentration of Cyclospora
- B. Wort can decrease plasma concentration of Tacrolimus
- C. Wort can decrease plasma concentration of Cyclosporine
- D. Wort can decrease plasma concentration of Mycophenolate
Correct answer: C
Rationale: The most significant information about the client self-administering St. John's wort, an herbal preparation, is that it can decrease the plasma concentration of Cyclosporine. St. John's wort is known to reduce the efficacy of Cyclosporine, which is a common immunosuppressant drug used to prevent transplant rejection. Choices A, B, and D are incorrect because St. John's wort does not affect the plasma concentration of Cyclospora, Tacrolimus, or Mycophenolate.
2. A client is receiving heparin to treat a deep vein thrombosis. The nurse should monitor which laboratory result to assist in evaluating the efficacy of the drug?
- A. Platelet count
- B. Prothrombin time
- C. Partial thromboplastin time
- D. Serum levels of protamine sulfate
Correct answer: C
Rationale: The nurse should monitor the partial thromboplastin time to evaluate the efficacy of heparin. Partial thromboplastin time reflects the anticoagulant effect of heparin by measuring the intrinsic pathway of coagulation. Platelet count assesses platelet levels and is not specific to heparin efficacy. Prothrombin time is used to monitor warfarin therapy. Serum levels of protamine sulfate are not used to evaluate the efficacy of heparin.
3. A client with a history of atrial fibrillation is prescribed verapamil. The nurse should monitor for which potential side effect?
- A. Constipation
- B. Diarrhea
- C. Headache
- D. Hypotension
Correct answer: A
Rationale: Verapamil, a calcium channel blocker, can commonly cause constipation due to its effects on smooth muscle relaxation in the gastrointestinal tract. Therefore, monitoring for constipation is important when a client is prescribed verapamil.
4. A client is admitted to a long-term care facility, and the nurse and a new employee are conducting medication reconciliation. The nurse notes that oxybutynin has been prescribed. The nurse realizes the new employee understands the drug's effect if the new employee explains that this medication is prescribed to treat which condition?
- A. Pain
- B. Depression
- C. Overactive bladder
- D. Chronic anxiety
Correct answer: C
Rationale: The correct answer is C: Overactive bladder. Oxybutynin is prescribed to treat overactive bladder by reducing muscle spasms of the bladder. It is classified as an anticholinergic medication. Choices A, B, and D are incorrect. Oxycodone is an opioid used for pain management. Bupropion is an antidepressant used to treat depression. Buspirone is an anxiolytic used to manage anxiety disorders.
5. A client with multiple sclerosis starts a new prescription, baclofen, to control muscle spasticity. Three days later, the client calls the clinic nurse and reports feeling fatigued and dizzy. Which instruction should the nurse provide?
- A. Avoid hazardous activities until symptoms subside
- B. Contact the healthcare provider immediately
- C. Continue taking the medication every day
- D. Stop taking the medication until the unpleasant side effects wear off
Correct answer: A
Rationale: The correct instruction for the nurse to provide is to advise the client to avoid hazardous activities until the symptoms of fatigue and dizziness subside. These side effects can impair the client's ability to engage in activities that require alertness and coordination, posing a risk for accidents. Contacting the healthcare provider immediately may not be necessary unless the symptoms worsen or persist. Continuing to take the medication every day without addressing the side effects can lead to further complications. Stopping the medication abruptly without healthcare provider guidance can also be risky and may not be necessary if the symptoms improve with time.
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