A nurse is reinforcing teaching with a client who takes furosemide and has a serum potassium level of 3.1 mEq/L. Which of the following foods should the nurse instruct the client to include in his daily diet?

Choice A rationale:
A client who takes glyburide for type 2 diabetes mellitus is not at significant risk for developing digoxin toxicity. Glyburide is an antidiabetic medication and does not interact directly with digoxin.

Choice B rationale: Furosemide, a loop diuretic, can cause electrolyte imbalances such as hypokalemia (normal potassium levels: 3.5 to 5.0 mEq/L) and hypomagnesemia (normal magnesium levels: 1.7 to 2.2 mg/dL). These imbalances increase the sensitivity to digoxin and the risk of toxicity. Digoxin toxicity is associated with symptoms like nausea, vomiting, and arrhythmias. Furosemide's impact on electrolytes makes it a significant risk factor for digoxin toxicity.

Choice C rationale: Cimetidine, a histamine H2 receptor antagonist, can inhibit the metabolism of certain drugs by affecting liver enzymes. However, it does not significantly alter digoxin levels or increase the risk of toxicity. Normal liver enzyme levels include ALT (7 to 56 U/L) and AST (10 to 40 U/L). While cimetidine may interact with other medications, its effect on digoxin is minimal.

Choice D rationale:
A client who takes azelastine for allergic rhinitis is not at significant risk for developing digoxin toxicity. Azelastine is an antihistamine and does not interact directly with digoxin.

Choice A rationale:
Elevating the head of the bed to a 45-degree angle is important for clients with obstructive sleep apnea (OSA) to help prevent airway obstruction during sleep. However, this should not be the nurse's immediate priority before leaving the client. Ensuring the client's positive airway pressure (PAP) device is properly applied is more crucial.
Choice C rationale:
While locking the side rails in place is generally essential for safety, it is not the most critical intervention for a client with OSA and urination issues. Ensuring proper use of the PAP device is a higher priority.
Choice D rationale:
Removing dentures or other oral appliances is important for preventing airway obstruction in clients with OSA, but it should not take precedence over ensuring the use of the PAP device. The nurse should address the immediate respiratory needs of the client.