HESI RN
Pharmacology HESI
1. A client has a prescription to take guaifenesin (Humibid) every 4 hours, as needed. The nurse determines that the client understands the most effective use of this medication if the client states that he or she will:
- A. Watch for irritability as a side effect.
- B. Take the tablet with a full glass of water.
- C. Take an extra dose if the cough is accompanied by fever.
- D. Crush the sustained-release tablet if immediate relief is needed.
Correct answer: B
Rationale: Guaifenesin is an expectorant used to help loosen mucus and make coughs more productive. Taking it with a full glass of water helps decrease the viscosity of secretions, making it easier to expel mucus from the respiratory tract. It is important not to crush sustained-release tablets, as this can alter the intended release of the medication and lead to potential adverse effects.
2. Isosorbide mononitrate (Imdur) is prescribed for a client with angina pectoris. The client tells the nurse that the medication is causing a chronic headache. The nurse appropriately suggests that the client:
- A. Cut the dose in half.
- B. Discontinue the medication.
- C. Take the medication with food.
- D. Contact the healthcare provider (HCP).
Correct answer: C
Rationale: Isosorbide mononitrate can cause headaches, which usually disappear during continued therapy. Taking the medication with food or meals can help alleviate the headache. It is important to recommend this approach before considering dose adjustments or discontinuation of the medication. Contacting the healthcare provider would be necessary if the headache persists despite taking the medication with food.
3. Which laboratory test should the nurse monitor to determine the effectiveness of heparin therapy for a client with deep vein thrombosis?
- A. Platelet count
- B. Prothrombin time (PT)
- C. Activated partial thromboplastin time (aPTT)
- D. Hemoglobin and hematocrit
Correct answer: C
Rationale: The activated partial thromboplastin time (aPTT) is the specific laboratory test used to monitor the effectiveness of heparin therapy in patients with deep vein thrombosis. It measures the time it takes for blood to clot and is crucial in assessing the therapeutic range of heparin. Platelet count, prothrombin time (PT), and hemoglobin and hematocrit levels are important parameters in assessing coagulation and blood status but do not directly indicate the effectiveness of heparin therapy.
4. A client is diagnosed with pulmonary embolism and is to be treated with streptokinase (Streptase). A nurse would report which priority data collection finding to the registered nurse before initiating this therapy?
- A. Adventitious breath sounds
- B. Temperature of 99.4°F orally
- C. Blood pressure of 198/110 mm Hg
- D. Respiratory rate of 28 breaths/min
Correct answer: C
Rationale: The correct answer is C. Streptokinase therapy is contraindicated in severe uncontrolled hypertension due to the risk of cerebral hemorrhage. A blood pressure of 198/110 mm Hg indicates severe hypertension, which needs to be addressed before initiating streptokinase to prevent potential complications.
5. Colcrys (colchicine) is prescribed for a client with a diagnosis of gout. The nurse reviews the client's medical history in the health record, knowing that the medication would be contraindicated in which disorder?
- A. Myxedema
- B. Renal failure
- C. Hypothyroidism
- D. Diabetes mellitus
Correct answer: B
Rationale: Colchicine is contraindicated in clients with severe gastrointestinal, renal, hepatic, or cardiac disorders, or blood dyscrasias. Renal failure is a condition where the kidneys fail to function adequately, leading to the accumulation of toxins in the body. Since colchicine is contraindicated in clients with renal disorders, including renal failure, it could exacerbate the condition and worsen the client's health. Myxedema, hypothyroidism, and diabetes mellitus are not contraindications for colchicine use. While these conditions may require caution or monitoring when administering colchicine, they are not absolute contraindications like renal failure.
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