NAPLEX (North American Pharmacist Licensure Examination) Practice Exam

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For maintaining heart failure patients on Digoxin, what electrolyte level needs to be above 2?

Calcium
Potassium
Magnesium
Sodium

The correct answer is: Magnesium

In heart failure patients maintained on Digoxin, the electrolyte level that needs to be above 2 is magnesium. Magnesium levels below 2 can increase the risk of Digoxin toxicity. Adequate magnesium levels help to maintain the effectiveness of Digoxin therapy and reduce the risk of adverse effects. Calcium, potassium, and sodium levels are also important to monitor in patients taking Digoxin, but specifically for maintaining heart failure patients on Digoxin, adequate magnesium levels are crucial.