HESI RN
Pharmacology HESI
1. When a client taking warfarin sodium (Coumadin) is prescribed ciprofloxacin (Cipro), the nurse should closely monitor the client for which potential effect of this drug interaction?
- A. Increased risk of bleeding
- B. Decreased warfarin effectiveness
- C. Increased risk of thrombosis
- D. Decreased ciprofloxacin effectiveness
Correct answer: A
Rationale: When ciprofloxacin (Cipro) is given with warfarin sodium (Coumadin), it can potentiate the effects of warfarin, leading to an increased risk of bleeding. Therefore, the nurse should closely monitor the client's INR levels and watch for signs of bleeding such as bruising, petechiae, or black tarry stools.
2. A healthcare professional prepares to administer sodium polystyrene sulfonate (Kayexalate) to a client. Before administering the medication, the professional reviews the action of the medication and understands that it:
- A. Releases bicarbonate in exchange for primarily sodium ions
- B. Releases sodium ions in exchange for primarily potassium ions
- C. Releases potassium ions in exchange for primarily sodium ions
- D. Releases sodium ions in exchange for primarily bicarbonate ions
Correct answer: B
Rationale: Sodium polystyrene sulfonate, such as Kayexalate, is a cation exchange resin that functions by releasing sodium ions in exchange for primarily potassium ions. This medication is commonly used to treat hyperkalemia, a condition characterized by elevated levels of potassium in the blood.
3. A healthcare provider notes that a client is receiving lamivudine (Epivir). The healthcare provider determines that this medication has been prescribed to treat which of the following?
- A. Pancreatitis
- B. Pharyngitis
- C. Tonic-clonic seizures
- D. Human immunodeficiency virus (HIV) infection
Correct answer: D
Rationale: Lamivudine, known by the brand name Epivir, is an antiretroviral medication used in the treatment of human immunodeficiency virus (HIV) infection. This medication helps to inhibit the replication of HIV and improve the immune system function in individuals with HIV. Therefore, the correct answer is option D, Human immunodeficiency virus (HIV) infection.
4. Bethanechol chloride (Urecholine) is prescribed for a client with urinary retention. Which disorder would be a contraindication to the administration of this medication?
- A. Gastric atony
- B. Urinary strictures
- C. Neurogenic atony
- D. Gastroesophageal reflux
Correct answer: B
Rationale: Bethanechol chloride (Urecholine) should not be administered to clients with urinary strictures as it can contract the bladder and increase pressure within the urinary tract. In individuals with urinary strictures, this elevated pressure may lead to bladder rupture. Therefore, caution is advised when considering the use of Bethanechol chloride in clients with urinary strictures to prevent potential complications. Gastric atony, neurogenic atony, and gastroesophageal reflux are not contraindications for the administration of Bethanechol chloride for urinary retention.
5. A client receives a prescription for methocarbamol (Robaxin), and the nurse reinforces instructions to the client regarding the medication. Which client statement would indicate a need for further instructions?
- A. My urine may turn brown or green.
- B. This medication is prescribed to help relieve my muscle spasms.
- C. If my vision becomes blurred, I need to be concerned about it.
- D. I need to call my doctor if I experience nasal congestion from this medication.
Correct answer: C
Rationale: The correct answer is C because blurred vision is an adverse effect of methocarbamol (Robaxin) and should be reported to a healthcare provider. Choices A, B, and D are all correct statements. Option A informs the client about a possible discoloration of urine, which is a known side effect. Option B correctly explains the purpose of the medication. Option D correctly advises the client to contact their doctor if they experience nasal congestion, which could indicate an adverse reaction.
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