1. A patient with chronic heart failure is prescribed digoxin. Which of the following is a crucial nursing intervention for monitoring this medication? A. Assessing for hypertension B. Monitoring serum electrolyte levels C. Evaluating for hyperglycemia D. Checking for urinary retention Answer: B. Monitoring serum electrolyte levels Rationale: Digoxin has a narrow therapeutic window and is affected by serum electrolyte levels, particularly potassium. Hypokalemia can increase the risk of digoxin toxicity. 2. When administering chemotherapy, what is the primary reason for a nurse to use a central line instead of a peripheral line? A. Central lines have a lower risk of infection. B. Chemotherapy can cause severe sclerosis and damage to peripheral veins. C. Central lines can deliver a larger volume of fluids. D. Chemotherapy is less painful when administered through a central line. Answer: B. Chemotherapy can cause severe sclerosis and damage to peripheral veins. Rationale: Chemotherapeutic agents are vesicants that can cause severe local tissue damage if extravasation occurs, hence the preference for central lines. 3. A nurse is caring for a patient on warfarin therapy. Which of the following foods should the patient be advised to avoid or consume consistently? A. Bananas B. Leafy green vegetables C. White bread D. Potatoes Answer: B. Leafy green vegetables Rationale: Leafy green vegetables are high in vitamin K, which can antagonize the anticoagulant effects of warfarin, affecting its efficacy. 4. For a patient with asthma, which medication should be used for acute